Can't get a straight answer From HD-OK OIL
I then asked if it is ok to use Amsoil, which I prefer. She would not say yes or no. I then asked for the *approved* list of oils that HD supposedly tested. I got a refusal on that as well. I am writing a letter to Amsoil to see if they are approved by HD. I can't believe this chit. It seems obvious to me that HD ONLY wants you to use THEIR oil and scares the unsuspecting customer into believing their warranty will be void if they don't use HD. It is a kind of round about way to avoid language that would put them in violation of MM act. How would they know if I used Amsoil or HD in my bike?
Harley-Davidson Confirms To AMSOIL That The Use Of Synthetic Motor Oils Other Than Harley-Davidson Oil Does Not Void Warranty Coverage
Harley-Davidson Motor Company
3700 West Juneau Ave., P.O. Box 653, Milwaukee, WI 53201 414/342-4680
January 31, 2003
Aaron Scanlon
AMSOIL Building
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.
Sincerely,
Lisa Sagen
Powertrain Customer Service
HD has been playing this game for decades. They use to spread rumors that synthetic couldn't be used in their bikes without voiding the warranty until, miracle of miracles, they came out with their own synthetic. Now it was not only OK, but recommended.
I don't have my owners manual here at work, but my guess is that any 20-50 from a reputable company would meet their specs. I do remember that my manual says that if HD oil isn't available, they recommend oil spec'd for diesel engines. Shell Rotella, for instance is rated to meet CF-4, SM and SL specs.
Don't expect a straight answer from HD. They want to baffle you with BS to try to intimidate you into buying their oil but they cannot come out and say you will void the warranty if you don't use it because it isn't true.
I personally don't use Amsoil, but tons of guys on here do and there is no way HD could void a warranty claim because you were using it







