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What's the difference between synthetic and regular oil?
Both synthetic and petroleum-based lubricants are derived from the same crude oils. But that's pretty much were the similarities end. Unlike their petroleum-based counterparts, which inherit physical components (including contaminates) of the source crude oil in the refining process, synthetic lubricants are manufactured from basestocks that are custom designed from scratch to have desired properties fro specific purposes, meaning that engineers have complete control of the lubricant from start to finish at the molecular level. |
What viscosity grade should I use in my Harley-Davidson® Motorcycle?
The recommended viscosity grade for all temperature conditions is SAE 20W50 Harley-Davidson® motor oil. SAE 10DW40 H-D® motorcycle oil is also available and appropriate for low temperature climates of 0-40F. The SAE 50 H-D motorcycle oil is satisfactory in ambient temperatures of 60-80F, and the SAE 60 H-D motorcycle oil in ambient temperatures above 80F. SAE 20W50 covers the broadest range of operating temperatures. |
What does Harley-Davidson® motorcycle oil do for my engine?
1. Protects the engine from rust and corrosion.
2. Keeps the engine clean.
3. Cools engine parts.
4. "Seals in" combustion pressure.
5. Prevents foaming.
6. Permits easy starting at a wide range of temperatures.
7. Provides quick oil circulation.
8. Reduces friction and power loss.
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