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tex00000 10-04-2010 03:19 PM

differential servicing
Hey everyone. I have a dana 30 up front and dana 35 in back of my tj sport. the back axle i know is not a lsd. but this weekend i was wanting to take both diff covers off changing the fluid and gasket. can anyone tell me whats the best fluid to use? and i know some oils come with the friction modifier already in them for lsd diffs, can i put that in a non lsd diff? thanks in advance for the help.

mrcarcrazy 10-04-2010 03:26 PM

90 Attachment(s)
Per Currie (a respected axle building company among other things) use regular dino gear lube.

my single piece of advise would be to look into the reusable gasket (I can't remember the name, but I'm confident someone will jump in and name it). its easier to use than the RTV sealant, and there's no more scraping off the old.

fluids with modifiers won't hurt your gears. so no worries there.

Jerry Bransford 10-04-2010 03:35 PM

Yep, the presence of the friction modifier won't hurt a thing in an axle without the LSD. The reusable gasket is called a Lube Locker which can easily be found for sale all over the internet.

I agree with the advice to use dino (conventional) gear lube for the reasons Currie requires its use to keep their axle warranty in effect... axles run cooler with a conventional gear lube than they do with a synthetic gear lube. That was surprising news to the people who conducted the tests that confirmed that.

If you tow or wheel in hot weather, stick with a higher viscosity like 80W-120, 90W-140, etc. If you don't tow, a 70W-80, 75W-90 is fine.

Torco 85W-140 is excellent stuff for pretty much any type of use, Currie resells it with Currie's name on the bottle.

tex00000 10-04-2010 04:52 PM

thanks both of you for the fast replys. yeah i use my jeep as a daily driver and the occasional mudding, offroading. and also where could i get dino lube? and thanks for the info on the reusable gasket

Jerry Bransford 10-04-2010 04:55 PM

Any gear lube that doesn't say synthetic on the bottle is dino lube. Any autoparts store carries dino gear lubes. Make sure it says GL-5 somewhere on the bottle. :)

tex00000 10-04-2010 04:57 PM

lol thanks just realized what the dino lube meant thanks everyone

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