Harley-Davidson recommends both motorcycle oils and gear lubes for its equipment. Because different models have different corresponding specific oil recommendations, it can cause confusion and lack of confidence when making AMSOIL lubricant recommendations. The following charts outline the proper sequence of product recommendations for the Harley-Davidson products listed.

Harley-Davidson has manufactured nine types of engines since 1929: Flathead (1929-1974), Knucklehead (1936-1947), Panhead (1948-1965), Shovelhead (1966-1984), Evolution (Blockhead) 1340 (1984-1999), Twin Cam (2000 to current), V-Rod (Revolution) (2001 to current), Ironhead Sportster (1957-1984) and Evolution Sportster (1985 to current). Harley-Davidson recommends SAE 60 or SAE 50 engine oil for Flathead, Knucklehead, Panhead and Shovelhead equipped bikes. AMSOIL recommends AMSOIL SAE 60 Synthetic Motorcycle Oil (MCS) or 20W-50 Synthetic Motorcycle Oil (MCV) for these vintage models, while AMSOIL MCS or 75W-140 Severe Gear® Synthetic Gear Lube (SVO) is recommended in the transmissions. Shovelhead is the only model with a chaincase that is lubricated with engine oil.

AMSOIL recommends MCV for all three holes (engine, transmission and primary chaincase) on Evolution 1340 and all Twin Cam engines. AMSOIL 75W-110 Severe Gear Synthetic Gear Lube (SVT) may be used as a secondary oil for the transmission, and SVO is an option for older transmissions. New seals are recommended where excessive leaking is evident.

Ironhead, Evolution Sportster and V-Rod engines use one lubricant for both the engine and transmission. AMSOIL recommends MCV for this common sump.

                                    AMSOIL Cross Reference

Harley-Davidson Part #                                   AMSOIL Product

99816-60 HD 360 SAE 60 Engine Oil            SAE 60 Motorcycle Oil (MCS)

99816-50 HD 360 SAE 50 Engine Oil            20W-50 Motorcycle Oil (MCV)

99816-2050 HD 360 SAE 20W-50                 20W-50 Motorcycle Oil (MCV)

99816-1040 HD 360 SAE 10W-40                 10W-40 Motorcycle Oil (MCF)

99824-03 Screamin Eagle Syn 3                   20W-50 Motorcycle Oil (MCV)

99892-84 Semi-Syn Trans Lube                    75W-110 Gear Lube (SVT)

                                                                  75W-140 Gear Lube (SVO)

                                                                  SAE 60 Motorcycle Oil (MCS)

98853-96 75W-90 Trans Fluid                       75W-110 Gear Lube (SVT)

99887-84 Primary Chaincase Lube                10W-40 Motorcycle Oil (MCF)

99896-88 Sport-Trans fluid                            10W-40 Motorcycle Oil (MCF)

99851-05 Formula +                                     20W-50 Motorcycle Oil (MCV)

99880-73 Type B Fork oil                              Suspension Fluid (STM)

99884-80 Type E Fork oil                              Suspension Fluid (STM)

Where the engine or operating conditions have been modified from the original manufacturer’s design, the recommended AMSOIL service intervals cannot be utilized. An exception is Dealer-installed, street-legal EFI Stage kits offered by Harley-Davidson. In all other cases of modifications, oil change intervals are at the owner’s discretion or based on specifi c oil analysis program recommendations. To set up a program, call Oil Analyzers (OAI) at 715-395-0222 or 1-800-956-5695.