Frequently Asked Questions
can I purchase AMSOIL products?
You can order products
directly online by clicking on the
Located on the left of
every page within the menu bar on our
website. Or click on How to Buy AMSOIL
within the menu bar to learn more about
AMSOIL Preferred Customer
and how to purchase AMSOIL at wholesale
can AMSOIL Dealers be located?
Answer: You can also find a
Dealer by searching your local Yellow
long have AMSOIL lubricants been on the
AMSOIL products have been available since
1972. AMSOIL 10W-40 Motor Oil was the first
synthetic motor oil to meet American Petroleum
Institute (API) service requirements. Today,
AMSOIL manufactures synthetic lubricants for
virtually all automotive, power sports,
commercial and industrial applications.
|Synthetic Oil Basics and
Switching From Petroleum to Synthetic
synthetic oil be used in new engines?
Answer: Yes. Synthetic oil
is perfectly safe for use in new or high-mileage
new cars be broken in using petroleum oil?
Answer: No. AMSOIL
Synthetic motor oils can be safely used during
break-in. In fact, many vehicles, including the
Dodge Viper and Chevrolet Corvette, are factory
filled with synthetic oil.
there a miles and time limit with respect to oil
matter how well motor oil is formulated, it
won’t last forever. Motor oil marketers and
vehicle manufacturers have developed general
recommendations for the maximum amount of time
or miles that the oil can be used; typically
these intervals fall between 3,000 and 7,500
miles, depending on the type of
Many AMSOIL motor oils are
specially formulated for extended drain
intervals and provide maximum protection longer
than other oils. Check the product data sheet
for specific recommendations.
synthetic motor oils cause engines to leak oil?
Synthetic oils do not cause engines to leak oil.
In fact, AMSOIL motor oil is fully compatible
with modern seal materials and is properly
formulated to condition seals, keeping them
pliable to prevent leakage.
AMSOIL motor oils be mixed with other
Yes. AMSOIL motor oils can be mixed with other
motor oil brands; however, mixing AMSOIL
products with other brands may decrease the
effectiveness of AMSOIL oils and will compromise
their extended drain capability. Mixing other
oils with AMSOIL motor oils may also void the
AMSOIL limited warranty.
types of synthetic base oil fluids does AMSOIL
the developer of the world's first API qualified
synthetic motor oil in 1972, AMSOIL has gained
more experience than any other oil company in
formulating automotive synthetic lubricants. It
is this extensive experience that provides the
ability to maximize product performance through
use of a full range of high-performance
synthetic base oils. AMSOIL views synthetic base
oils the same as it views additives, with each
having its own set of unique properties. AMSOIL
engineers its lubricants with the synthetic base
oil or combination of base oils best suited to a
specific lubricant’s application demands
(gasoline, diesel, racing, transmission, gear,
extended drain, extreme temperature, etc.).
AMSOIL INC. maintains an unwavering commitment
to provide products that outperform the
competition and deliver maximum benefits to all
AMSOIL customers. Performance is the bottom
is AMSOIL Synthetic Blend Heavy Duty Diesel
AMSOIL Synthetic Blend Diesel Motor Oil (PCO) is
formulated with synthetic and petroleum fluids.
They are combined to form an all-season motor
oil that demonstrates many of the performance
features of full synthetic lubricants.
are AMSOIL engine oils capable of extended drain
AMSOIL engine oils are formulated using premium
synthetic base oils, and the highest quality
additives, that provide extended-drain
capabilities. Formulated with high quality
additives, AMSOIL engine oils achieve greater
cleaning powers, while providing better
equipment protection over longer oil drain
intervals. AMSOIL’s unique synthetic
formulation, and robust TBN retention, works to
resist oxidation and neutralize the acids that
shorten the service life of other oils. AMSOIL’s
strong resistance to high temperature volatility
(burn-off) helps reduce oil consumption, while
maintaining viscosity over longer periods of
time than other oils. Please check the product
data sheet for specific recommendations.
AMSOIL motor oils decrease oil
AMSOIL motor oils can reduce oil consumption in
mechanically sound engines. However, AMSOIL
motor oils cannot fix engines that consume oil
because of mechanical problems.
there a recommended procedure for changing to
AMSOIL motor oil?
There are no special requirements for changing
to AMSOIL motor oil. However, in older vehicles
with high mileage, it may be advisable to use
AMSOIL Engine Flush first. This will ensure the
engine is clean and free of accumulated
contaminants which may affect on the service
life of AMSOIL motor oil. It is recommended that
an AMSOIL Absolute Efficiency Oil Filter (EaO)
be installed at every oil change.
AMSOIL motor oils compare to other motor
importance of good-quality oil in your engine
cannot be stressed enough. AMSOIL synthetic
motor oils consistently outperform other
conventional and synthetic oils in virtually
every category of performance, including wear
protection, extreme high and low temperature
performance, foam control, viscosity retention,
rust and corrosion protection, volatility and
fuel economy. While other brands may have good
performance in a few of these areas, AMSOIL
consistently performs at the top in every
category. Drivers can have confidence knowing
that AMSOIL motor oils provide maximum
performance and protection.
are “normal” and “severe” driving
Answer: Each vehicle manufacturer
defines “normal” and “severe” driving conditions
for their equipment; AMSOIL recommends owners
check these definitions in their owner’s manual
to determine the service condition in which they
AMSOIL defines normal service as personal
vehicles frequently traveling greater than 10
miles at a time and not operating under severe
AMSOIL defines severe service for gasoline
engines as turbo/supercharge engines, commercial
or fleet vehicles, excessive engine idling, use
of AMSOIL engine oil in vehicles with more than
100,000 miles without prior regular use of
AMSOIL engine oil, daily short-trip driving less
than 10 miles (16km), frequent towing, plowing,
hauling or dusty-condition driving.
AMSOIL defines severe service for diesel
engines as extensive engine idling, daily
short-trip driving less than 10 miles (16km) or
frequent dusty-condition driving.
AMSOIL Product Recommendation and
Drain Interval Chart, publication number
G1490, for additional information.
|Motor Oil: Gasoline Auto and
AMSOIL motor oils “all-season” oils?
Yes. Because AMSOIL motor oils are formulated
with premium synthetic base oils, they have
superior high and low-temperature performance.
Synthetic oils resist thinning out at high
temperatures to maintain critical protection in
extreme heat. They also minimize sludge and
deposit formation in high-temperature operation.
AMSOIL synthetic motor oils resist thickening in
cold temperatures to provide rapid cold starts
and improved low-temperature operation compared
to conventional oils.
are there multiple oils of the same
significant portion of an oils performance and
specification compatibility comes from the
additive components blended in the oil. AMSOIL
offers multiple oils with the same viscosity
because they are formulated with different
additive packages that carry different
manufacturer oil specifications. This allows
AMSOIL to provide premium oil for more equipment
manufacturers and industry specifications than
would be possible if only a single viscosity
grade was offered.
is the difference between AMSOIL XL Series Motor
Oils and other AMSOIL motor oils?
AMSOIL XL Series Motor Oils have a recommended
oil drain interval of 10,000 miles or 6 months,
whichever comes first. AMSOIL top-tier motor
oils carry a drain interval of 25,000 miles or 1
year, whichever comes first. AMSOIL top-tier
motor oils incorporate better base-oils and have
more robust additives, which allow for longer
extended drains than AMSOIL XL Series Motor
aren’t AMSOIL racing oils recommended for
AMSOIL Dominator Racing Oils are premium quality
oils formulated for maximum protection in
high-performance and racing applications.
Dominator Racing Oils are fortified with high
levels of zinc and phosphorus, which are
incompatible with catalytic converters common in
today’s street-driven vehicles; therefore, they
do not carry API service classifications
required by many standard passenger vehicles.
However, AMSOIL Racing Oils are the ideal
recommendation for street rods, muscle cars and
other high performance vehicles driven on the
does the “W” represent in 5W-30 motor oil?
“W” in 5W-30 motor oil stands for “winter” and
represents that the oil meets or exceeds certain
criteria for good low-temperature performance.
Oil with SAE viscosity grade 5W-30 will behave
like an SAE 30 oil at high temperatures and SAE
5W oil at low temperatures, providing the
necessary fluidity for rapid starts and
efficient engine operation at low
is considered to be “normal” oil
What may be normal oil consumption for one
vehicle may be excessive for another. As a rule,
the more miles and wear accumulated on an
engine, the more oil that engine will consume.
Typically, one quart of oil within 3,000 miles
is normal, but you should confirm oil
consumption limits with the vehicle
manufacturer. The following document explains
mechanical related issues that can lead to oil
|Motor Oil: Heavy Duty &
safe to use Engine Flush in diesel
Yes. AMSOIL Engine Flush (AEF) is safe to use in
gasoline and diesel engines. This multi-use
formulation helps loosen sticky valves and
piston rings. It also helps reduce lifter noise
and removes sludge and deposit buildup for clean
operation and lower operating
diesel oils be used in gasoline engines?
depends; some AMSOIL diesel oils carry gasoline
specifications. Check the product data bulletin
for specific product and drain interval
AMSOIL offer diesel oils for equipment calling
for the CJ-4 specification?
Yes. The CJ-4 specification is for 2007 and
later high-speed, four-stroke diesel engines.
AMSOIL 5W-40 Premium API CJ-4 Synthetic Diesel
Oil (DEO) and AMSOIL 15W-40 Premium API CJ-4
Synthetic Diesel Oil (DME) are formulated to
meet the sulfur content requirements necessary
to be compatible with exhaust after treatment
systems and/or extended drain
the AMSOIL CJ-4 diesel oils okay to use in older
Yes. AMSOIL CJ-4 oils are formulated with lower
sulfur content to be compatible with 2006 and
later high-speed, four-stroke diesel engines
with exhaust after treatment systems and/or
extended drain intervals. AMSOIL 5W-40 CJ-4
Synthetic Diesel Oil and 15W-40 CJ-4 Synthetic
Diesel Oil exceed previous diesel oil
specifications, meaning they are suitable for
use in older diesel engines. CJ-4 oils exceed
performance criteria for CI-4 Plus, CI-4, CH-4,
CG-4 and CF-4 and can be safely used in place of
is the difference between AMSOIL 5W-40 and
15W-40 diesel oil?
Both AMSOIL 5W-40 and 15W-40 diesel oils are
multi-grade oils, meaning they have good
performance in high and low temperatures. AMSOIL
5W-40 and 15W-40 will both behave like SAE 40
grade oils in high temperatures; however, the
5W-40 will be thinner than the 15W-40 at cold
CI-4 rated oil be used in 2007 or newer diesel
Model 2007 and newer diesel engines are fitted
with exhaust after treatment systems necessary to
meet current minimum emissions requirements and
are sensitive to the sulfur content of the oil.
CI-4 and CI-4 Plus oils typically contain too
much sulfated ash to be compatible with these
after treatment systems. As always, when in
doubt, check the specification of the oil to
determine the suitability of the oil for your
intended application. AMSOIL INC. recommends
following the manufacturer recommendations
specific to the diesel oil rating called for in
the specific model/year
|Motor Oil: Power
Sports and Small Engine
safe to use 10W-30 in a small engine that calls
for SAE 30 petroleum motor oil?
Yes. During operation the 10W-30 motor oil will
perform like SAE 30 motor oil, and it is safe to
use in an application requiring straight SAE 30
oil. If starting the small engine in
temperatures below 50°F, the multi-grade oil may
AMSOIL Formula 4-Stroke® 0W-40 Synthetic Motor
Oil be used in new four-stroke
Yes. AMSOIL Formula 4-Stroke 0W-40 (AFF) is
specifically formulated for use in small, hard
working four-stroke engines. It is ideal for
four-cycle snowmobiles, ATVs, personal
watercraft, four-stroke boat motors, lawn
AMSOIL Signature Series 0W-30 Synthetic Motor
Oil be used in lawnmower applications?
Yes. AMSOIL Signature Series 0W-30 Synthetic
Motor Oil (SSO) can be used in lawnmower
applications calling for SAE 30 weight engine
oil. However, due to its robust formulation
specifically designed for hot temperature,
severe service operation of small engines AMSOIL
4-Stroke 10W-30/SAE 30 Synthetic Small Engine
Oil (ASE) is recommended.
okay to break in new two-cycle equipment using
AMSOIL synthetic motor oils?
Yes. There are no problems using AMSOIL 2-cycle
oils for break-in periods.
does “wet clutch” mean when discussing power
clutches are immersed in motor oil to cool the
clutch plates. Wet clutches are often found in
motorcycle applications and they require fluids
with certain frictional requirements to promote
smooth shifting and clutch engagement. Dry
clutches require no lubrication.
AMSOIL have a two-cycle engine oil recommended
for power valves?
AMSOIL INTERCEPTOR™ Synthetic 2-Cycle Oil (AIT)
is recommended for power valve applications. It
has optimal detergency to keep power valves
clean and provides superior anti-wear
100:1 mix ratios while using AMSOIL Saber
Professional or AMSOIL Saber Outboard 2-cycle
Oils void warranties?
Using AMSOIL Saber Professional (ATP) or AMSOIL
Saber Outboard (ATO) at 100:1 mix ratios, where
50:1 is recommended by the manufacturer, will
not void warranties. For more information,
contact AMSOIL Technical Services at (715)
AMSOIL Formula 4-Stroke® 0W-40 Synthetic Motor
Oil be used in a four-stroke ATV or snowmobile
where the recommended viscosity is 5W-50?
Because AMSOIL builds an extremely shear-stable
product, AMSOIL Formula 4-Stroke 0W-40 (AFF) can
be used in place of SAE 50 oil in some cases.
Contact AMSOIL Technical Services for specific
product interchange information.
AMSOIL motor oils are recommended for
AMSOIL SAE 20W-50 Synthetic Motorcycle Oil
(MCV) and Synthetic SAE 60 Motorcycle Oil
(MCS) are the most commonly recommended oils
for Harley applications.
is the difference between Formula 4-Stroke®
10W-40 Synthetic Scooter Oil and SAE 10W-40
Synthetic Motorcycle Oil?
AMSOIL 10W-40 Synthetic Motor Oil (MCF) contains
an additive package that is designed for the
extreme pressures and high temperatures common
in motorcycle applications. Its high TBN
retention also makes it the appropriate choice
for extended drain intervals. In scooter
applications, AMSOIL 10W-40 Synthetic Scooter
Oil (ASO) is the more economical
is the recommended transmission lubricant for a
Harley Davidson Big Twin?
newer Big Twins, AMSOIL recommends AMSOIL 20W-50
Synthetic Motorcycle Oil (MCV) or SEVERE GEAR®
Synthetic Extreme Pressure Lubricant 75W-110
(SVT). In older Harleys, such as Knuckleheads,
Panheads and Shovelheads, AMSOIL Synthetic SAE
60 Motorcycle Oil (MCS) is
is the recommended transmission lubricant for a
AMSOIL recommends 20W-50 Motorcycle Oil (MCV)
for the Harley-Davidson Sportster.
AMSOIL motorcycle oils wet clutch
Yes. AMSOIL Motorcycle Oils meet JASO MA2
friction requirements for use in wet clutch
AMSOIL Series 2000 Synthetic Chaincase Lubricant
acceptable to use in the primary of a Harley
Davidson Big Twin?
AMSOIL Series 2000 Synthetic Chaincase Lubricant
(TCC) does not have the correct viscosity for
use in Harley-Davidson primaries, and is not
recommended for these applications. AMSOIL
recommends a product such as AMSOIL Synthetic
20W-50 (MCV) Motorcycle oil for Harley-Davidson
can AMSOIL recommend 20W-50 Synthetic Motorcycle
Oil for use in the primary and transmission in
AMSOIL Motorcycle Oils are engineered with
additive packages specifically designed to
provide higher performance in motorcycle
engines, transmissions and
is the oil change interval for AMSOIL motorcycle
AMSOIL motorcycle oils are engineered to provide
protection up to twice the manufacturer’s
recommended change interval or one year,
whichever comes first.
For Big Twin
Harley-Davidson transmissions, follow the
Harley-Davidson recommended drain interval for
synthetic oil up to 20,000 miles or one year,
whichever comes first. Unless you are using an
AMSOIL Ea air filter, change the filter based on
the manufacturer’s recommended intervals.
AMSOIL motorcycle oils different from AMSOIL
Yes. In addition to withstanding extreme
pressure, protecting against rust and
withstanding high temperatures, motorcycle oils
must be compatible with wet clutches. AMSOIL
motorcycle oils are designed to meet the unique
frictional requirements necessary for wet clutch
compatibility and provide maximum protection and
performance in these applications.
does AMSOIL offer more than one viscosity
AMSOIL offers motorcycle oils in different
viscosities to accommodate the differences
between motorcycle models and manufacturers.
Just as in automotive applications, motorcycle
engines require specific oil viscosities for
optimal performance and protection based on the
components and tolerances in the engine. Check
the AMSOIL on-line look-up guide for specific
are the change intervals for AMSOIL Synthetic
Universal Automatic Transmission Fluid and
AMSOIL Synthetic Fuel Efficient Automatic
AMSOIL Synthetic Universal Automatic
Transmission Fluid (ATF) and Synthetic Fuel
Efficient Automatic Transmission Fluid (ATL) are
recommended for use up to 50,000 miles in severe
service operation and up to 100,000 miles in
normal service operation, or per vehicle
manufacturer recommendations, whichever is
longer. Use vehicle manufacturer or transmission
manufacturer definitions for normal and severe
service, as these can vary among manufacturers.
Check the AMSOIL on-line look-up guide for
required that all of the transmission fluid be
removed before adding AMSOIL transmission
AMSOIL Synthetic Universal Automatic
Transmission Fluid (ATF) and AMSOIL Synthetic
Fuel Efficient Automatic Transmission Fluid
(ATL) are compatible with petroleum and
synthetic transmission fluids and can be used to
top off transmission fluid levels. However, if
conducting a transmission fluid change, most of
the fluid in the automatic transmission will be
replaced with the new fluid.
AMSOIL Engine and Transmission Flush be used in
AMSOIL Engine and Transmission Flush (FLSH) is
safe to clean sludge and deposit buildup from
automatic transmissions to promote efficient
operation and fuel efficiency. AMSOIL Engine and
Transmission Flush is not recommended for manual
transmissions, CVT transmissions, transaxles or
differentials. AMSOIL recommends that the
transmission filter be changed when performing a
AMSOIL offer transmission fluid for manual
transmissions? If so, what is the change
AMSOIL offers two manual transmission fluids:
Synthetic Manual Synchromesh Transmission Fluid
5W-30 (MTF) and Synthetic Manual Transmission
and Transaxle Gear Lube 75W-90
Manual Synchromesh Transmission
Fluid 5W-30 (MTF) is engineered for 50,000 mile
service intervals or longer (up to 150,000
miles) as indicated by the equipment
manufacturer. Manual Transmission and Transaxle
Gear Lube 75W-90 (MTG) is engineered to last two
times longer than conventional petroleum GL-4
gear oils. Following equipment manufacturer
drain intervals for synthetic oils is
recommended. Check the AMSOIL on-line look-up
guide for specific recommendations.
AMSOIL Engine and Transmission Flush compatible
Yes. AMSOIL Engine and Transmission Flush is
compatible with engine and transmission seal
materials. In fact, this product is specially
formulated to condition seals to help prevent
leaks and extend seal
is the difference between a “micron rating” and
“beta ratio test” when referring to
filter’s micron rating refers to the smallest
size contaminant the filter media can remove;
however, there is no correlation between micron
rating and a filter’s efficiency
The beta ratio test measures
a filter’s efficiency for removing particles of
a certain size by comparing the amount of
contaminant particles before and after
filtration. The number of particles after
filtration is divided by the number before
filtration. The resulting number is the beta
ratio. AMSOIL Ea filters have a minimum beta
ratio of 75, meaning they are capable of
removing 98.7% of contaminant particles of a
AMSOIL air filters washable? How are they
AMSOIL Ea Air Filters are not washable, but
should be cleaned by vacuum or shop air every
25,000 miles or one year, whichever comes first.
Clean the filter housing with a cloth, use care
to avoid knocking contaminants into the air
To vacuum, carefully vacuum the
filter media on the dirty side. If using shop
air, blow the filter media at a 45-degree angle
on the clean side, using low-pressure air (15 –
okay to use non-AMSOIL brand filters with AMSOIL
Yes. Non-AMSOIL brand filters may be used with
AMSOIL lubricants. However, the manufacturer
recommended change intervals and cleaning
procedures should be followed. AMSOIL supports
the full 10,000 mile/6 month XL Motor Oil drain
interval with any non-AMSOIL oil
is the proper change interval for by-pass
AMSOIL Ea By-Pass Filters are engineered to last
60,000 miles when used in conjunction with an
AMSOIL Ea full-flow oil filter and AMSOIL motor
oil. Ea By-Pass Filters used with another brand
of full-flow filter or motor oil should be
changed every other full-flow filter
larger size filter be used in place of what a
vehicle calls for?
Filter recommendations by AMSOIL are based on
specific equipment manufacturer requirements.
Using a filter in an application it is not
recommended for will void the filter’s limited
long can oil drains be extended when using a
by-pass filtration system?
AMSOIL By-Pass Filters are designed to filter
out fine particles; they are not meant to extend
oil change intervals beyond original
recommendations. However, when fine particles
are filtered out of the motor oil, it may be
possible to attain longer drain intervals. This
should be determined by used oil analysis. In
addition, the use of an AMSOIL bypass system may
allow for the use of larger oil filters, which
can increase filtering capacity.
is the service life of AMSOIL air and oil
Answer: When properly maintained,
AMSOIL Ea Air Filters are guaranteed for up to
four years or 100,000 miles, whichever comes
When used in conjunction with
AMSOIL motor oil, AMSOIL EaO oil filters are
guaranteed for up to 25,000 or one year in
normal service and up to 15,000 miles or one
year in severe service. AMSOIL Ea15K oil filters
carry a 15,000 mile change interval, or one
year, whichever comes first, regardless of
driving conditions. It is recommended that all
AMSOIL brand oil filters be changed when the
motor oil is changed. If motor oil other than
AMSOIL is used, the AMSOIL Ea Series oil filter
must be changed at the recommendation of the
See the list below for EaO oil filter change
interval recommendations, by part number:
25,000 mile, or 1 year, EaO
filters: EaO64, EaO35, EaO34, EaO38,
EaO37, EaO30, EaO59, EaO23, EaO11, EaO48, EaO42,
EaO25, EaO96, EaO27, EaO52, EaO15, EaO24, EaO88,
EaO80, EaO26, EaO99
15,000 mile, or 1 year, Ea15k
filters: Ea15K09, Ea15K10, Ea15K12,
Ea15K13, Ea15K20, Ea15K29, Ea15K32, Ea15K33,
Ea15K46, Ea15K50, and
multiple AMSOIL gasoline fuel additives be mixed
together with gasoline?
Yes. AMSOIL fuel additives are compatible. When
selecting a fuel additive be sure that it is the
appropriate choice for the application. Visit
www.amsoil.com for more information on fuel
additives, or call Technical Services at (715)
exactly does AMSOIL P.i. gasoline fuel additive
AMSOIL P.i. is the most potent gasoline additive
available today. It helps maintain peak engine
efficiency, fuel economy, power and drivability
in newer low mileage engines. As a concentrated
detergent, it is unsurpassed in cleaning
combustion chamber deposits, intake valve
deposits and port fuel injector
AMSOIL offer any fuel additives that combat
ethanol related problems?
Yes. AMSOIL Quickshot ™ SE (AQS) contains a
revolutionary technology that focuses on three
major fuel-related issues plaguing small engines
and power sports equipment: ethanol, water and
dirty pump gas. Ethanol in fuel has a tendency
to absorb water and separate from the gasoline.
It then sinks to the bottom of the gas tank,
where it quickly degrades and creates gum,
varnish and other insoluble debris that can plug
fuel flow passages and negatively affect engine
performance. When this ethanol/water mixture is
pulled into the engine, it creates a lean burn
situation that increases combustion chamber
temperatures and can lead to engine damage.
AMSOIL Quickshot™ SE is proven to successfully
fight ethanol problems and improve
often should AMSOIL Gasoline Stabilizer be used
in power sports and small engine
AMSOIL Gasoline Stabilizer (AST) should be used
when fuel is stored for long-term, seasonal
storage. For short- to medium-term storage,
Quickshot™ SE is
AMSOIL Diesel Concentrate comply with Ultra Low
Diesel (ULSD) fuel requirements?
Yes. AMSOIL Diesel Concentrate (ADF) is
compliant with the federal requirements for
ULSD. AMSOIL Cetane Boost (ACB) and Cold Flow
Improver (ACF) also meet USLD
AMSOIL Cold Flow Improver work if diesel fuel is
beginning to gel?
AMSOIL Cold Flow Improver (ACF) is designed to
prevent fuel from gelling and clogging fuel
lines and filters. If the fuel is beginning to
gel, the fuel should be treated with AMSOIL
Diesel Recovery Emergency Fuel Treatment (DRC).
Diesel Recovery disperses the wax crystals and
allows the fuel to flow.
safe to use AMSOIL Engine and Transmission Flush
in diesel trucks and cars?
Yes. AMSOIL Engine and Transmission Flush (FLSH)
is safe for use in diesel and gasoline engines
and automatic transmissions to help restore
equipment efficiency and operation. AMSOIL
Engine and Transmission Flush is not recommended
for manual transmission, CVT transmissions,
differentials, transaxles, small engines or
power sports equipment.
benefits are seen when using AMSOIL Cetane
Elevated cetane levels, generally above 50, are
preferable to get the most performance and power
out of diesel engines. AMSOIL Cetane Boost (ACB)
is engineered to improve the cetane value of
diesel fuel up to seven points. AMSOIL Cetane
Boost is appropriate for all types of service,
including heavy- and light-duty service, on- and
off- road and marine diesel engines. Cetane
Boost is compatible with biodiesel and all types
of exhaust emissions systems and is excellent
for use with Ultra Low Sulfur Diesel Fuel
(ULSD). AMSOIL Cetane Boost also improves
operating cost by improving fuel economy,
provides complete combustion for better power,
reduces white smoke and emissions, and improves
cold temperature starting.
|Vehicle Warranty and
does using AMSOIL synthetic motor oil affect new
Using AMSOIL synthetic motor oil has no affect
on vehicle warranties. A federal law called the
Magnuson-Moss Act (1975) prevents original
equipment manufacturers from putting conditions
on vehicle warranties attached to any product or
service identified by brand, trade or corporate
name, unless the manufacturer provides that
product or service free of charge. This means
consumers have the freedom to use aftermarket
products of their choice without fear of losing
the original limited or implied vehicle
warranty. For additional information, contact
AMSOIL Technical Department (715) 399-TECH
extending oil change intervals void new vehicle
Extending oil change intervals will not void new
vehicle warranties. To affect the vehicle
warranty, it must be determined that the
lubricant was directly responsible for the
failure; if the oil didn’t cause the problem,
the warranty cannot be voided, regardless of
brand or length of time in use.
AMSOIL have a warranty for products?
Yes. AMSOIL provides a limited warranty on all
AMSOIL lubricants and filters.
should questions, regarding warranty, be
Call the AMSOIL Technical Department at (715)
399-TECH (8324) with questions or issues
there a glossary of common lubricant terms used
in technical bulletins?
is oil analysis?
analysis is a process for determining the
chemical properties of a lubricant. It’s often
used to detect mechanical issues before major
failures occur. Used oil samples are analyzed
for specific physical properties, contaminant
levels and wear debris from the equipment to
determine if the oil can remain in service. Oil
analysis can also monitor the wear rate of the
equipment and detect if wear is elevated beyond
acceptable limits. It is often used as part of a
preventative maintenance program.
should oil analysis be done?
part of a preventative maintenance program, oil
analysis can help owners and operators be
proactive in their maintenance practices to help
increase equipment productivity and eliminate
costly downtime. The cost of routine oil
analysis far outweighs the costs to replace
major equipment on large industrial equipment,
commercial and passenger car
For those reluctant to extended
oil intervals, oil analysis provides evidence
that AMSOIL motor oils have exception
performance and protection capabilities in
Do you provide oil analysis services?
Yes. Fisher Resource Solutions® provides oil analysis services
through Oil Analyzers Inc. Visit
or call (866)
AMSOIL Propylene Glycol Antifreeze and Engine
Coolant compatible with aluminum intakes,
cylinder heads and engine blocks?
Yes. AMSOIL Antifreeze and Engine Coolant (ANT)
is compatible with all engine and cooling system
components. It surpasses all ASTM standards for
metallic corrosion to protect metals and provide
uncompromised cooling protection.
AMSOIL recommend a particular type of water when
mixing AMSOIL Antifreeze and Engine
AMSOIL recommends deionized or distilled water
when mixing with AMSOIL Antifreeze and Engine
Coolant (ANT). Using deionized or distilled
water prevents adding harmful contaminants that
can negatively affect the antifreeze product and
cooling system equipment.
AMSOIL Antifreeze and Engine Coolant silicate
and borate free?
Yes. AMSOIL Antifreeze and Engine Coolant (ANT)
contains proprietary poly-organic acid
technology that is silicate and borate free.
GL-2 through GL-5 gear lubes hurt
All gear oils AMSOIL recommends for manual
transmission applications are perfectly safe for
AMSOIL Slip Lock need to be used with AMSOIL
AMSOIL automotive gear lubricants have excellent
frictional properties and generally will not
need to be fortified with additives. If on rare
occasions differential chatter occurs, AMSOIL
Slip Lock is recommended.
different AMSOIL gear lubricant viscosities be
AMSOIL gear lubricants are compatible with one
another. Mixing different AMSOIL gear
lubricants, however, could change the viscosity
properties of the oils, depending on the ratios
and viscosities mixed. This could impact the
drain interval. Mixing different viscosities of
lubricants should be minimized whenever
vehicle manufacturer recommends a 75W-90, can a
75W-140 be used?
In most cases using 75W-140 gear oil is too
heavy to be used in place of the recommended
75W-90. If higher viscosity gear oil is desired,
AMSOIL would typically recommend a 75W-110
viscosity. A modified or non-stock differential
may call for heavier oil. Call the AMSOIL
Technical Department for assistance at (715)
AMSOIL gear lubes safe for yellow metals?
Yes. As long as temperatures don’t exceed 250°F
(121°C), all AMSOIL automotive gear oils are
safe to use in drive train applications with
yellow metals. Check the AMSOIL on-line look-up
guide at www.amsoil.com for specific
AMSOIL gear lube compatible with RTV
AMSOIL automotive gear lubricants are compatible
with RTV sealant. It is very important the RTV
sealant manufacturer’s instructions be followed
and the product be FULLY cured before contact
with the gear lubricant.
AMSOIL Severe Gear be used in Harley
Yes. In newer Big Twins, AMSOIL recommends
AMSOIL 20W-50 Synthetic Motorcycle Oil (MCV) or
SEVERE GEAR® Synthetic Extreme Pressure
Lubricant 75W-110 (SVT). In older Harleys, such
as Knuckleheads, Panheads and Shovelheads,
AMSOIL Synthetic SAE 60 Motorcycle Oil (MCS) is
AMSOIL gear lube compatible with conventional
AMSOIL automotive gear lubricants are compatible
with other synthetic and petroleum based gear
lubricants. However, mixing AMSOIL gear oils
with oils will shorten the life expectancy and
AMSOIL Synthetic Automatic Transmission Fluid
safe to use in Mercon V and Mercon
Yes. AMSOIL Synthetic Automatic Transmission
Fluid (ATF) is engineered to provide maximum
performance and protection in a number of
automatic transmission applications. AMSOIL
Synthetic Automatic Transmission Fluid is
formulated for Mercon V applications and is
backward compatible, meaning it is also suitable
for Mercon applications.
“off the shelf”, singularly specified Ford
Mercon product be used in a Mercon V
The Mercon specification precedes the Mercon V
specification; therefore, it is not formulated
to adequately protect and perform in Mercon V
applications. AMSOIL Synthetic Automatic
Transmission Fluid (ATF) is engineered to exceed
Mercon V and Mercon specifications and can be
used in both applications.
Synthetic Automatic Transmission Fluid is
engineered to meet the Mercon specification and
is not recommended for Mercon V