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1996 3.1 4jg2 transfer case oil?

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1996 3.1 4jg2 transfer case oil?

Postby mudgrip4 » Sun Aug 21, 2022 1:47 pm

Just swapping another transfer case onto my bighorn - can anyone advise which oil (seem to recall its motor oil i.e. 10w40), and how many litres?

Doesn't look a long job - any tips, anything one should watch for?
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Re: 1996 3.1 4jg2 transfer case oil?

Postby geeves » Sun Aug 21, 2022 5:18 pm

manual or auto? For auto use ATF for manual use the same oil you used in your gearbox. Book says use 15w40 engine oil in both cases fore the transfer case but most people use a 80w90 gear oil designed for 5 speed gearboxes in the gearbox and of course all Isuzu autos use Dexron3 atf. The viscosity rating on gear oils is different to engine oils and thickness wise 80w90 gear oil isnt much different to 15w40 engine oil . Only thing to watch is dont use extreme pressure or hypoid oils in a gearbox. The additives corrode brass syncro rings and the oil breaks down over 100C
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: 1996 3.1 4jg2 transfer case oil?

Postby mudgrip4 » Wed Aug 24, 2022 7:37 am

Mine's an auto. How many litres does t/case take?
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Re: 1996 3.1 4jg2 transfer case oil?

Postby geeves » Wed Aug 24, 2022 5:33 pm

Looks like 2 litres
Sanding your knuckles before starting work can help. That way you cant skin them
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Re: 1996 3.1 4jg2 transfer case oil?

Postby mudgrip4 » Fri Aug 26, 2022 11:55 am

Thanks dude.. just putting replacement t/case on. Will be selling truck shortly. Be good for someone - well set up to moderate club spec and well maintained.

Wonder what its worth - tidy 7 seat 96 3.1 with 2" suspension lift, 32s, snorkel, tune, breathers etc etc..
mudgrip4
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