Using non GM gear oil?

[Sherlock]

I have an 02 Yukon XL 2500 4WD 8.1L with heavy tow package and 4.10 gearing. I am wondering if I can have the front and rear diffs and the transfer case oil changed at a Jiffy Lube that uses Pennzoil lubricants. They say they have similar factory authorized synthetics that can be used in place of the OEM GM lubricants. They are 60% less expensive than having the dealer change the fluids. Is this ok? If not, I'll suck it up and get it done at the dealer.

 

Thanks for any input.

[Sherlock]

Thanks GM Tech. I'll go the less expensive route.

[Mighty HD]

I've got Mobil 1 in both mine, 11,000 miles later it's still fine. Screw GM and their $25/quart gear oil that smells like grapes.

[GM-Tech]

As long as the lubricants meet the specifications required, no problem. I'm sure Pennzoil lubes do.

[Wingnut]

I've got Mobil 1 in both mine, 11,000 miles later it's still fine.  Screw GM and their $25/quart gear oil that smells like grapes.

 

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What...You got a problem with grapes?