[thrashergrant]

I ordered some oil to do my 2nd diff fluid change. When I made the purchase I was sure to double check the part numbers and oil requirements.

I received the oil today. It is the correct part number (88862624) but the label has this weird designation next to the oil weight: GL-5

What is this? This oil is the same part number as the factory oil so I assume its the same stuff, but my previous bottles didn't have this.

Am i good to go using this?

[Eldi Z]

GL5 is a specification calling for EP (Extreme Pressure) applications which you would typically find in Limited Slip type environments as in our rear diffs.

There is plenty of material online that explains differences between the various GL specs. (mainly 3, 4 and 5) Also many Youtube videos.
Just do a search, read & watch and you shall understand.

[thrashergrant]

Originally Posted by Eldi Z

GL5 is a specification calling for EP (Extreme Pressure) applications which you would typically find in Limited Slip type environments as in our rear diffs.

There is plenty of material online that explains differences between the various GL specs. (mainly 3, 4 and 5) Also many Youtube videos.
Just do a search, read & watch and you shall understand.

Cool, thanks for the summary. I hadn't seen this specification on the label before and just wanted to make sure it is okay to use.

[Boost Creep]

My fluid, same part number, doesn't have the GL5 on the label, picked this fluid up earlier this year.

[thrashergrant]

I'm noticing a few other differences as well:

The volume on the fluid I'm used to seeing is "Contents: 32oz. (.946 L)"

The volume on the fluid I just received is "Net Contents: 1 QT (946 mL)"

Could this possibly be from a larger, bulk quantity? That's all I can think of to explain the discrepancy...or it's a rip off?

Has anyone else seen this before?

[Eldi Z]

If you got it from a reputable dealer then it should be fine. Probably just an updated bottle.

[enzia35]

Originally Posted by Eldi Z

If you got it from a reputable dealer then it should be fine. Probably just an updated bottle.

Yep, this. Instead of having to look at the back to see what rating it is, it's on the front now!

I had a shop change out the fluids, and I used the OEM stuff like that for the diff. It seems to run just fine.

[pkincy]

Don't have a Camaro or a Camaro Owners Manual but that is the part number recommended for the C7 Z06 diffs. It is, or at least was when I flushed mine, at a pretty good price from Amazon.

[Eldi Z]

Originally Posted by pkincy

Don't have a Camaro or a Camaro Owners Manual but that is the part number recommended for the C7 Z06 diffs. It is, or at least was when I flushed mine, at a pretty good price from Amazon.

When I change my fluid, this is what I am going to use.

https://www.lgmotorsports.com/access...-ls-75w90.html

https://www.summitracing.com/int/par...2686/overview/

Especially since reputable shops, like LG Motorsports, who specialize in drive-train and suspensions recommend it, then I trust it to be top notch quality and equal and probably better than the OE/AC-Delco stuff.

[CZRENE6ADE]

Originally Posted by Eldi Z

When I change my fluid, this is what I am going to use.

https://www.lgmotorsports.com/access...-ls-75w90.html

https://www.summitracing.com/int/par...2686/overview/

Especially since reputable shops, like LG Motorsports, who specialize in drive-train and suspensions recommend it, then I trust it to be top notch quality and equal and probably better than the OE/AC-Delco stuff.

Did you use it only for differential or also for the transmission?it was good?

[Boost Creep]

Originally Posted by CZRENE6ADE

Did you use it only for differential or also for the transmission?it was good?

Diff fluid is gear oil, trans fluid is ATF.
Two completely different oils.

[Eldi Z]

Originally Posted by CZRENE6ADE

Did you use it only for differential or also for the transmission?it was good?

Diff only.
Tranny for modern Tremec TR60xx applications is ATF / Similar Viscos to ATF