[zr1chris]

Originally Posted by avalonandl

Will have dealer change it at next oil change. I pay people to do this stuff now....old and gray....LOL

Will make sure they add the 88900330 AC Limited slip LUBE too....

Don't need the additive if they use the correct fluid.

[speedup]

Probably going to do this soon, just want to make sure I get the right stuff,

88862624 (ACDelco 10-4034 Dexron LS 75W-90 Gear Oil) is what the manual says I need, do I also need to add the limited slip additive?

looks like 1.2 quarts of fluid needed

that all ?

[zr1chris]

Originally Posted by speedup

Probably going to do this soon, just want to make sure I get the right stuff,

88862624 (ACDelco 10-4034 Dexron LS 75W-90 Gear Oil) is what the manual says I need, do I also need to add the limited slip additive?

looks like 1.2 quarts of fluid needed

that all ?

From the research I've done on this... It's already in it. That's what the LS stands for.

[Rock-It Man]

Originally Posted by zr1chris

From the research I've done on this... It's already in it. That's what the LS stands for.

It's a legitimate question.

Gen 5 Camaro and Gen 6 Corvette required an additive even though the oil was "LS".

However, the current "LS" oil in the the current GM performance rear axle requires no additive.

This information is and has always been in the Owner's Manual. No guessing required.

[modru2004]

my 18 2ss with 5500 miles has developed the rear diff groan. gonna take it to the dealer once it starts getting cooler. it only happens on the rare morning it gets really cool. so until it can be reliably reproduced on a cool morning im just gonna wait.

[shawndean22]

30k miles, still haven't changed mine....

[torqueaddict]

The common denominator in most if not all of theses cases seem to be cooler weather so probably a viscosity issue. I would guess people in hotter climates need not worry as much.

[whiteboyblues2001]

Originally Posted by dfmoeller

Just looking for some opinions. My 2018 2SS M6 Camaro just turned over 3000 miles. I've heard suggestions that limited slip differentials should have their fluid changed anywhere between 500 miles to 20,000 miles. What is the consensus on this?

Thanks.

Doug

Early Gen 6's had an issue with "rear end groan" in which the rear axle made some noise. Generally it was cleared up with a fluid change. I changed mine (2016) early and had no issues (take that for what it's worth).

So, it certainly won't hurt, and in this case, may even prevent a known issue. My advice is to change it. You will be surprised at what comes out after break-in.