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car engine oil

does anybody try or use synthetic car engine oil on our Harley? whats difference ?

Having a seperate Engine/Primary/tranny I don't need friction modifiers. I've used regular mobile 1 synthetic in the engine and haven't had any issues nor noticed any difference in temp or noise from the engine.

Do some reading on what zinc and phosphorous are used for in oil and decide if you really need more in your oil.
 
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