used some auto parts store 75-90 that of course had limited slip additive in it cause they all seem to these days and I didn't think much about it at the time. that was about 10k miles ago, today the wife calls and says the rear end is making a funny noise when I made a u turn and feels like when we used to have to push cars with a welded diff afterwards for a few turns in the parking lot.
so yeah grabbed some fluid from the dealer on the on way home since I've read these g80s sometimes chatter with off the shelf oil. blah. we shall see if it does it in this stuff or if it was the oil.
here's the latest part number according to my local guy, replacing 89021677. dealer wants 35$ for it, 17$ on Amazon. I got them down to 25$.
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while under looking around, you guys ever hear of the rear heater hose quick connects breaking? cause mine look pretty horrible and it looks like there's not a split, they run all the way to the front? ugh.
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oh and I have a 4in aluminum drive shaft, don't know where gm meausues from, but tip of ear to ear is 41in.. I guess it's stock? don't know if it's would fit anything else but these odd ball trucks.
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