||Harley-Davidson Motor Company
3700 West Juneau Ave., P.O. Box 653, Milwaukee, WI 53201
January 31, 2003
Superior, WI 54880
Dear Mr. Scanlon:
Thank you for your recent letter requesting information on
Harley-Davidson's one-year, unlimited mileage warranty when
Synthetic Lubricants are used.
Until now, the Motor Company has never supported the use of
synthetic products in our vehicles because there had never been any
test validations completed on the numerous formulations in HD/Buell
motorcycles to determine the viability of using these products on
Harley-Davidson products until now.
We have developed a specially formulated synthetic fluid called
SYN3. This fluid can be used in Harley-Davidson engines,
transmissions and primary chaincases. This product had been
exclusively designed for Harley-Davidson and is the only synthetic
product tested and certified by Harley-Davidson engineering for use
on HD/Buell motorcycles.
The use of a different brand of fluid does not void the
one-year, unlimited mileage warranty unless it can be confirmed
that the use of such products was the cause of the failure.
Thank you, Mr. Scanlon, for taking the time to write to
Harley-Davidson and allowing me to answer your questions.
Powertrain Customer Service