2016 Rear Differential Fluid/Rear Axle Fluid

[Cohen]

Not trying to beat a dead horse on this one but came across this since I have the G80 and seems like its few and far between for 75W90 without FM.  Found these couple that seem like any would be okay?

 

MPT Full Synthetic High Performance Gear Oil, 75W90 NFM (No Friction Modifier) - MPT Industries

Mobil 122044 Mobil Delvac 1 Synthetic Gear Oil | Summit Racing

Red Line Synthetic Oil. 75W90 NS GL-5 Gear Oil (redlineoil.com)

 

 

 

The GM PN (GM19300457) 75W85 that the manual calls out:

Rear Axle Lubricant - 32 oz 19300457 | NewGMParts.com

 

Edited July 12, 2024 by Cohen

[txab]

Also Amsoil's diff lubes

 

 

[Cohen]

7 hours ago, txab said:

Also Amsoil's diff lubes

 

 

 

The Amsoil Long Life 75W90?

https://www.amsoil.com/p/amsoil-75w-90-long-life-100-synthetic-gear-lube-fgr/

 

Not this one? (description says contains FM, but data sheet says add FM as needed)

https://www.amsoil.com/p/amsoil-severe-gear-75w-90-100-synthetic-gear-lube-svg/

 

[txab]

2 hours ago, Cohen said:

 

The Amsoil Long Life 75W90?

https://www.amsoil.com/p/amsoil-75w-90-long-life-100-synthetic-gear-lube-fgr/

 

Not this one? (description says contains FM, but data sheet says add FM as needed)

https://www.amsoil.com/p/amsoil-severe-gear-75w-90-100-synthetic-gear-lube-svg/

 

You'll be fine using Amsoil. Thousands if not millions of successful examples out there. There is a little FM in most brands. It's the small additive bottle that gets you into to trouble, causing clutch packs to chatter and lock up when they shouldn't.

 

 

Grumpy wouldn't have approved my post if my info was bad. I knnow he really likes Redline products. Use what you feel comfortable with

Edited July 12, 2024 by txab

[Black02Silverado]

3 hours ago, Cohen said:

 

The Amsoil Long Life 75W90?

https://www.amsoil.com/p/amsoil-75w-90-long-life-100-synthetic-gear-lube-fgr/

 

Not this one? (description says contains FM, but data sheet says add FM as needed)

https://www.amsoil.com/p/amsoil-severe-gear-75w-90-100-synthetic-gear-lube-svg/

 

You can us this one. I have used it in my 2002 Silverado for over 200,000 miles changing it when I got the truck new and then again at 100k and again at the next 100k.  No issues.

 

https://www.amsoil.com/p/amsoil-severe-gear-75w-90-100-synthetic-gear-lube-svg/?zo=521390

[Grumpy Bear]

12 hours ago, txab said:

Grumpy wouldn't have approved my post if my info was bad. I knnow he really likes Redline products. Use what you feel comfortable with

 

I've been running AMSOIL Severe Gear 75W90 for some time now. Packaging  And yes, I like Red Line. 

The Red Line 75W90NS was gone for a few years. I see it is back now. Used that as primary oil in the Harley. Wet clutches loved it. 

 

Both are tough as nails. Neither are easy to shear down. Either is fine.