Sonoma rear diff leak

SuperSherman44 said:

Thank you all for the replies. @Joe Cool now that I think about it, I could’ve sworn I saw a teeny tiny hole in it in that general area last time I got up close to it. But I thought it may just be a breather or something. I will get underneath it again and check again (make sure my mind isn’t playing tricks on me🤣). I do agree that it’s very odd. And, luckily, the plug on mine works good, so it shouldn’t be any problem there. Anyone know where I can find a good replacement for the cover?

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SuperSherman44 said:

Shoot. I was just about to ask that. I’m not sure exactly which one I have. If this info helps, it’s a 4WD 02. With the 3.42 (GU6) and Positraction (G80)

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7.5 VS 8.5 differences

Around 86/87 GM started switching from the 7.5" (7-1/2) rear ends to the 7.625" (7-5/8) rears. But for simplicity, I'm only referring to the rears as 7.5". Also, even though GM switched to the 7.625", the 7.5" was used well into 89/90. The only S-series that were guaranteed to have the 8.5"...

www.s10forum.com

hogster said:

def looks to me more like a brake fluid leak...oil up that high in the diff would only be lil' splashes from the gears

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Joe Cool said:

I'm impressed, not many people know about Kroil. It's expensive but worth the cost.

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