Zl1 Rear End Fluid

[el ess A]

Just did mine today, 1900 miles, with the GM 88862624. Fluid looked fairly clear, but a bit hazy coming out, my plugs were similar to Shark's pics.

And for those wondering if it's synthetic or not...

From Bobistheoilguy.com web forum:

Hi Brad,

Thank you for submitting your question to the Petro-Canada Lubricants website. Dexron LS Gear Oil 75W-90 is a synthetic extreme pressure automotive axle lubricant with limited slip top treat package. It is formulated for GM Axle Service Fill applications.

I hope that helps.

Regards,

Michael Kaufman
Technical Services Advisor
Petro-Canada Lubricants Inc.
Tel 1-888-877-6522
mkaufman@suncor.com
http://lubricants.petro-canada.ca/
Suncor Energy is the proud owner of Petro-Canada