Thread: Rear diff fluid
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Old 11-19-2009, 08:43 PM
Luv2Camp Luv2Camp is offline
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Default Re: Rear diff fluid

Just know that, to my knowledge, there is NO 75-90 gear oil out there that meets GM specs listed in the manual. GM also makes their fluid smell like grapes (I am NOT kidding) This is an easy way for them to tell when they drain the fluid if it is genuine GM fluid or not just by the smell test! The stuff is not cheap either..
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