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AMSOIL Signature Series Synthetic Motor Oil is
guaranteed for extended drain intervals in unmodified1, mechanically
sound2 gasoline-fueled vehicles as follows:
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Normal Service3 – Up to 25,000 miles or one
year, whichever comes first.
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Severe Service4 – Up to 15,000 miles or one
year, whichever comes first.
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In all non-gasoline-fueled vehicles
applications, extend the oil change interval according to oil
analysis or follow the OEM drain interval.
1. Engines operating under modified conditions
(non-stock) are excluded from extended drain recommendations.
Examples include the use of performance computer chips; non-OEM
approved exhaust, fuel or air induction systems; and the use of
fuels other than those recommended for normal operation by the
manufacturer.
2. Mechanically sound engines are in good
working condition and do not, for example, leak or consume excessive
amounts of oil, are not worn out, do not overheat, do not leak
antifreeze and have properly working emissions control systems.
AMSOIL recommends repairing malfunctioning engines prior to the
installation of AMSOIL synthetic oils.
3. Personal vehicles frequently traveling
greater than 10 miles (16 km) at a time and not operating under
severe service.
4.Turbo/supercharged engines, commercial or
fleet vehicles, excessive idling, vehicles with more than 100,000
miles without prior continuous use of AMSOIL motor oil, daily
short-trip driving less than 10 miles (16 km), frequent towing,
plowing, hauling or dusty condition driving.
AMSOIL Ea® Full-Flow Oil Filters are designed
for extended change intervals. They stop smaller particles, flow
more oil and last longer than regular filters. For best performance,
use AMSOIL Ea Oil Filters. While Signature Series' 12-month service
life remains intact if a non-Ea Oil Filter is used, the filter must
then be changed according to its manufacturer's recommendations.
It is normal for vehicles to use some oil
between oil changes. Check your oil regularly to ensure your oil
remains at a safe level.
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