Robin Ream wrote:

Hello Paul,

    I know this is a rotary engine forum, but I've got what I think is a simple car question you can probably answer very easily.  I'm installing an Auburn limited slip differential in a two wheel
drive pick-up and the manufacturers recommendation is to use a proprietary additive with heavy weight petroleum oil rather than an over the counter heavy weight synthetic.  The question:  Are they
trying to insure repeat sales of both additive and differentials, or is the synthetic oil really not good to use in the limited slip differential?  It looks to me like they're trying to approximate
the quality of the synthetic by using the additive, but as Dennis Miller says "That's just my opinion; I could be wrong."  :-)

Thanks,
Robin

 
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