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Getting ready to put in a set of 5:13's. Is there a gear oil thats better than the rest or are they pretty much all the same?:confused:
 

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Use standard 80w/90 for breakin and then go to a synthetic like royal purple.
 

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I just put Amsoil 75-140 in mine. I also run Amsoil in the engine.

I don't think you can go wrong with either Amsoil or Royal Purple.

JD
 
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