[CalgaryZL1]

Originally Posted by Dynamical

And that's yet another part number I never seen before. Not sure why it's so difficult for GM to list the correct part number in the book. At least mine does NOT say what to use. It says "see your dealer" in my book.
Does the ELSD take a different fluid than the MLSD?
I'm looking at 3-4 different part numbers on this fluid which I cannot decipher the difference

https://www.amazon.com/Genuine-88900.../dp/B00BK7LXGM

https://www.amazon.com/ACDelco-10-41.../dp/B07CL6MBX5

https://www.amazon.com/ACDelco-10-40.../dp/B000QGOX1A

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

GM does a great job with giving me a headache

Both the Canadian and American numbers are only one digit different and both those part numbers have been around for a long time, best thing to do is make sure it has the friction modifier additive already included in the formula instead of this new synthetic shit where you have to add it, I would rather just change it every year for the peace of mind instead of trying to go 45,000 miles, which is what they probably recommend