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The superior protection and performance of AMSOIL Synthetic Motorcycle Oil is recognized by the largest and most influential motorcycle rallies in the nation. The Sturgis Motorcycle Rally, Daytona Bike Week, Laconia Motorcycle Week, Biketoberfest and the Lone Star Rally all proudly feature AMSOIL as their Official Oil. AMSOIL shares your passion for riding. From the kickoff to the motorcycle season in Daytona to the year’s closing rally in Galveston, AMSOIL is proud to lend its support to the motorcycle lifestyle.

Harley-Davidson Confirms To AMSOIL That The Use Of Synthetic Motor Oils Other Than Harley-Davidson Oil Does Not Void Warranty Coverage - HD Warranty Addendum

MODEL	ENGINE	TRANSMISSION	PRIMARY CHAINCASE
Flathead*	AMSOIL SAE 60 V-Twin Motorcycle Oil	AMSOIL Synthetic V-Twin Transmission Fluid or SAE 60 V-Twin Motorcycle Oil	—
Knucklehead*	AMSOIL SAE 60 V-Twin Motorcycle Oil	AMSOIL Synthetic V-Twin Transmission Fluid or SAE 60 V-Twin Motorcycle Oil	—
Panhead*	AMSOIL SAE 60 V-Twin Motorcycle Oil	AMSOIL Synthetic V-Twin Transmission Fluid or SAE 60 V-Twin Motorcycle Oil	—
Shovelhead*	AMSOIL SAE 60 V-Twin Motorcycle Oil	AMSOIL Synthetic V-Twin Transmission Fluid or SAE 60 V-Twin Motorcycle Oil	—
Evolution* 1340 & all Twin Cam*	AMSOIL 20W-50 V-Twin Motorcycle Oil	AMSOIL 20W-50 V-Twin Motorcycle Oil**	AMSOIL 20W-50 V-Twin Motorcycle Oil**
Ironhead,* Evolution Sportster* & V-Rod*	AMSOIL 20W-50 V-Twin Motorcycle Oil	AMSOIL 20W-50 V-Twin Motorcycle Oil**	AMSOIL 20W-50 V-Twin Motorcycle Oil**
Milwaukee-Eight*	AMSOIL 20W-50 V-Twin Motorcycle Oil	AMSOIL 20W-50 V-Twin Motorcycle Oil**	AMSOIL 20W-50 V-Twin Motorcycle Oil**

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.

**While AMSOIL 20W-50 Synthetic V-Twin Motorcycle Oil delivers outstanding performance in motorcycle transmissions and primary chaincases, some bikers prefer dedicated lubricants over multi-use products. AMSOIL Synthetic V-Twin Transmission Fluid and AMSOIL Synthetic V-Twin Primary Fluid are secondary recommendations in these applications.