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Do new 1450cc harley davidson engines use same oils in engine and transmission ?

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Where the Hell do people come up with these answers. Dude your motor takes 20/50 or synthetic oil. For your Evo I recommend Harley 20/50. Your Primary and Transmission takes Harley trannie and primary oil. Unless a person runs Harley Synthetic then all 3 cases can be run the same oil. You do not have to run Harley Brand. any air cooled motorcycle brand will work. amsoil is one and alot of people run red line in their tranny. But to keep it simple and sweet You can run Synthetic in all 3 cases...If running 20/50 thats for engine and Harley trannie and primary is different.

Posted on Jun 15, 2009

  • v2iper
    v2iper Jun 15, 2009

    I now see that you have a twin cam so run Synthetic and it will be the same in all 3 cases Motor, Primary, Trannie.



If you use Harley oil from the dealer, you use 20-50w oil for the engine and they use special formulated lube that you use in both the transmission and primary,Some people do use the same oil in the engine,tranny and primary, I would not recommend it

Posted on Jul 03, 2008


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