AMSOIL Synthetic V-Twin Motorcycle Oil resists viscosity breakdown 6X better than Harley-Davidson* SYN3* for improved protection against compensator and transmission gear wear.**
See the ResultsKeep your Harley-Davidson running optimally and prolong engine and transmission life with everything needed to perform an oil change in one convenient box.
Shop NowAMSOIL synthetic motorcycle oils use premium synthetic base oils that naturally resist breakdown from extreme engine heat, so you can ride longer and farther.
We’re thrilled to sponsor several iconic American motorcycle events and races for millions of riders every year, including the Sturgis, Daytona and Laconia rallies.
Learn MoreGary, Verified Buyer"I’ve run into some very hot summer traffic in Branson, Missouri and the oil pressure and temperature stayed amazingly stable under extreme-heat conditions."
Specifications contained on this website are based on manufacturers' information and were believed accurate at the time of publication. Our recommendations apply to AMSOIL products only, as we cannot be responsible for products from other manufacturers. Always compare fluids and lubricants that were installed in the vehicle with those replacing them during service. Never install more fluid or lubricant than what is considered adequate according to gradients on dipstick or level of filler hole. Fill and drain locations are for reference only. Failure to perform adequate inspections or obtain proper resolution will limit or negate any liability toward AMSOIL INC. Models introduced midyear may not have the same specifications as those produced earlier.
If any discrepancies are noted, they can be simply reported to AMSOIL by clicking on the "Problem?" link docked to the left. We review all reported problems, if you would like a personal response to the issue you are reporting please enter your email address in the space provided on the form.