[Dynamical]

Originally Posted by RamAir02

GM makes a lot of different vehicles...

ACDelco 10-4034 (GM 88862624 in US, 88862625 in CA) is for our cars.

ACDelco 10-4016 is what my 4th gen trans am takes.

The information is in the owner's manual. Page 329 in the 2019 manual. Might be a different page for different model year.

Thanks. I never used ACDelco in any of my 4th gens. The only noise was the 3.73 in the 10 bolt but I blame that on the 1.5 60's

My 2022 Camaro book says "see your dealer" in that section of the book.
Is ACDelco 10-4034 a conventional oil? It's the only one that doesn't say it's synthetic but it looks like it's the only one that states it contains the LS additive. Are we not supposed to be using synthetic in these differentials?

[CalgaryZL1]

The way I look at it is when I order a pizza and get it home and have to add cheese because It didn’t have any at this new fancy restaurant that everybody talks about or do I order a pizza that has cheese already and just start eating

[WhiteMale]

That linked Valvoline *should* meet specs, its marked as having the friction modifier in it.

[ctrlz]

Originally Posted by WhiteMale

That linked Valvoline *should* meet specs, its marked as having the friction modifier in it.

Hard to know.
Click on the 3 star amazon reviews for that fluid and you will see people had chatter.
I was not aware the electronic diff had separate compartment for the clutches. So is that separately serviced with a special fluid? I will dig into the service manual later.

[WhiteMale]

I used this Royal Purple and my ZL1 has been good to go


https://www.oreillyauto.com/detail/c...yn+75-90&pos=2

[RamAir02]

Originally Posted by ctrlz

Hard to know.
Click on the 3 star amazon reviews for that fluid and you will see people had chatter.
I was not aware the electronic diff had separate compartment for the clutches. So is that separately serviced with a special fluid? I will dig into the service manual later.

Yeah, I've never serviced it and I'm not aware of any particular interval to do so, but it is separate from the eLSD diff fluid. It may not need service unless a hydraulic line is disconnected letting air into the system? Not sure.

The eLSD clutch actuator system uses Dexron VI ATF (P/N: 88861037 in US, 19264717 in CA). Capacity is 0.160 liters or 5.4 oz. Looks like you need a specific tool -- DT-51381 -- eLSD Coupler Release Bleed Tool. I've attached the fill/bleed process from the service manual.

[CalgaryZL1]

Originally Posted by RamAir02

Yeah, I've never serviced it and I'm not aware of any particular interval to do so, but it is separate from the eLSD diff fluid. It may not need service unless a hydraulic line is disconnected letting air into the system? Not sure.

The eLSD clutch actuator system uses Dexron VI ATF (P/N: 88861037 in US, 19264717 in CA). Capacity is 0.160 liters or 5.4 oz. Looks like you need a specific tool -- DT-51381 -- eLSD Coupler Release Bleed Tool. I've attached the fill/bleed process from the service manual.

Thanks very much for the info good to know