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| * The Three Fluid System below is recommended for Big Twin Evolution and Twin Cam models. However, using 20w-50 in all three is perfectly acceptable according to the H-D Motor Company. |
| Engine | |
| Transmission | |
| Primary Chain Case | |
20w-50 oil may be used in all three - Engine, Transmission, and Primary Case as specified by the H-D Motor Company, however Harley Performance recommends using a heavier 75w-90 gear lube in the transmission. Both methods exceed the manufacture's and API specification and will not void any warranty.
1 Harley's new 6-Speed tranmission will benefit from using Severe Gear 75w-140 in the transmission to reduce gear noise. |
| AMSOIL Cross Reference |
| Harley-Davidson Part # | AMSOIL Product |
| 99816-60 HD Engine Oil | MCV 20w-50* Engine Oil |
| AHR SAE 60 Engine Oil |
| 99892-84 Transmission Lube | SVG 75w-90 SEVERE GEAR 75W-90 |
| SVO 75w-140 SEVERE GEAR 75W-140 |
| MCV 20w-50* Engine Oil |
| 99824-03 Screamin Eagle Syn 3 | MCV 20w-50* Engine Oil |
| 99887-84 Primary Chaincase Lube | MCF 10w-40* or MCV 20w-50 Engine Oil |
| 99896-88 Sport-Trans fluid | MCV 20w-50 or MCF 10w-40 Engine Oil |
| 99880-73 Type B fork oil | STM #10 Suspension Fluid |
| 99884-80 Type E fork oil | STM #10 Suspension Fluid |
| NOTE: AMV and AMF Motorcycle oils have been replaced by the new and improved MCV and MCF Synthetic Motorcycle Oils. |
