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Changing oils in trans and diffs #1049942 08/13/12 01:10 PM
Joined: Nov 2006
Posts: 96
H
huskyohilux Offline OP
Getting the Wheeling Fever
It's time to oversee the fluids in my '93 4x4 p/u.
The M/T and T/C should have API-GL4/GL5 SAE75W90.
Same in the front axle. For the rear diff it gets trickier...
I believe my truck came with an LSD factory rear end. Truck is actually europeean Volkswagen Taro (Toyota Hilux/Pickup assembled in Germany). I elevated the rear end and both wheels spin in the same direction when one is turned -> LSD?
The FSM specifies a special 75W90 LSD hypoid oil for that application. I can't seem to find exactly that anywhere. Castrol has a 75W140 as a recommendation. Do I dare to put that in there?

From the Off-Road World
Re: Changing oils in trans and diffs [Re: huskyohilux] #1049943 08/13/12 09:58 PM
Joined: Jan 2000
Posts: 12,153
4Crawler Offline
Web Wheeler
*****
M/T will do better with GL-4 gear oil, t-case will work on pretty much anything:
- http://www.4crawler.com/4x4/4R_TechInfo.shtml#Fluids

GL-5 in the diffs, hypoid oil is basically GL-5 oil, hypoid refers to a helical cut gear like the ring and pinion. For clutch type limited slip, you can add a limited slip diff. friction additive if you get some chatter with regular GL-5 gear oil.

Re: Changing oils in trans and diffs [Re: 4Crawler] #1049944 08/17/12 08:06 AM
Joined: Nov 2006
Posts: 96
H
huskyohilux Offline OP
Getting the Wheeling Fever
Did the exchange yesterday. Put Mobil fully synthetic GL-4 75W80 in the transmission, GL-5 75W90 in the transfer case and front axle. Quaker State fully synthetic 75W90 Limited Slip in the rear axle. Funny thing, when I was crawling under there I found a sticker under the dirt on the housing saying "Only LSD oil". I wasn't 100% sure the truck came with LSD from the factory but now I know. Gotta say the transmission feels smoother now <img src="/forums/images/graemlins/cheers.gif" alt="" /> There wasn't much metallic residue on the magnetic plugs. Hopefully the drivetrain will hold a few more years now! Too bad the rest of the truck has seen its best days <img src="/forums/images/graemlins/rolleyes.gif" alt="" />


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