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.
Protection against extreme heat is of the utmost importance in motorcycle applications. The air-cooled V-twin engines used in Harley-Davidson motorcycles can get extremely hot, particularly when idling or traveling at low speeds. If a motorcycle oil cannot withstand hot operating temperatures, its ability to provide adequate engine protection is compromised. AMSOIL Synthetic Motorcycle Oil is formulated to withstand extreme heat conditions beyond the hottest temperatures motorcycles typically experience, providing peace of mind that motorcycles receive outstanding protection and performance no matter how extreme the operating conditions.
Aside from being air-cooled, Harley big bores tend to run higher cylinder temperatures because of the long stroke and comparatively smaller bore which increases the swept area in the cylinder and piston speed for any given RPM. Big twins that are operated in the southern areas of the country where outside temperatures are higher or are used in a lot of stop and go city driving will see elevated temperatures, especially in the rear cylinder. All of these factors put increased demands on the engine oil. Compared to conventional petroleum oil, synthetic motorcycle engine oil offers many advantages. High grade synthetic oils manufactured from PAO (Polyalphaolefins) base stocks offer dramatically better wear protection and excel in high and low temperature extremes. In cold temperatures, synthetic motor oils provide near instant oil pressure and easy cranking during starts.
At high operating temperatures conventional petroleum oil can oxidize, causing increased wear with sludge and deposit formation. On the other hand, synthetic oil's uniform molecular structure is stable and resistant to breakdown leading to cooler operation and preventing sludge and carbon deposits. Synthetic motor oils dissipate heat faster often dropping cylinder temperatures twenty to fifty degrees. Synthetic oils help maximize fuel economy and increase horse power by reducing friction and drag considerably compared to conventional oils. Synthetic oils such as AMSOIL high performance synthetic motorcycle oil also offers the benefit of longer change intervals of up to twice the manufacturer’s recommended change interval or one year, whichever comes first. As a result, adding an element of convenience to the purchase of synthetic motorcycle oil.
Flathead | Best | Secondary |
Engine | SAE 60 | 20W-50 |
Transmission | SAE 60 | MVT Synthetic V-Twin Transmission Fluid |
Knucklehead | Best | Secondary |
Engine | SAE 60 | 20W-50 |
Transmission | SAE 60 | MVT Synthetic V-Twin Transmission Fluid |
Panhead | Best | Secondary |
Engine | SAE 60 | 20W-50 |
Transmission | SAE 60 | MVT Synthetic V-Twin Transmission Fluid |
Shovelhead | Best | Secondary |
Engine | SAE 60 | 20W-50 |
Transmission | SAE 60 | MVT Synthetic V-Twin Transmission Fluid |
Evolution 1340 - Twin Cam | Best | Secondary |
Engine | 20W-50 | -- |
Transmission | 20W-50 | MVT Synthetic V-Twin Transmission Fluid |
Primary Chain Case | 20W-50 | MVP Synthetic V-Twin Primary Fluid |
Ironhead - Evolution Sportsters / V-Rods | Best | Secondary |
Engine, Transmission / Chain Case | 20W-50 | -- |
Milwaukee-Eight 107 | Best | Secondary |
Engine | 20W-50 | -- |
Transmission | 20W-50 | MVT Synthetic V-Twin Transmission Fluid |
Primary Chain Case | 20W-50 | MVP Synthetic V-Twin Primary Fluid |
Milwaukee-Eight 114 | Best | Secondary |
Engine | 20W-50 | SAE 60 |
Transmission | 20W-50 | -- |
Primary Chain Case | 20W-50 | -- |
AMSOIL Cross Reference | |
Harley-Davidson Part # | AMSOIL Product |
99816-60 HD Engine Oil | MCS SAE 60 Engine Oil |
MCV 20W-50 Engine Oil | |
99851-05
Formula | MCV 20W-50 Engine Oil |
99824-03 Screamin Eagle Syn 3 | MCV 20W-50 Engine Oil |
99887-84 Primary Lube | MCV 20W-50 Engine Oil |
99892-84 Transmission Lube | MVT Synthetic V-Twin Transmission Fluid |
MCS SAE 60 Engine Oil | |
99896-88 Sport-Trans Fluid | MCV 20W-50 Engine Oil |
MVI 20W-40 Engine Oil | |
99880-73 Type B Fork Oil | STM #10 Suspension Fluid |
99884-80 Type E fork oil | STM #10 Suspension Fluid |