Correct weight and type of oil for front/rear diffs and t-case? (1 Viewer)

[dfinn]

Gonna tackle these before HIH. I've been reading some of the older threads on here and I'm left a little confused on what gear oil is needed for all 3. Just want to confirm before ordering.

Front: 1.8 qts of 80w-90 GL-5
Rear : 3.5 qts of 80w-90 GL-5
t-case : 1.4qts of 75w-90 GL-5

That seem right? For the rear do I need gear oil for LSD or no? I've got a '00 with atrac but I don't think that counts as LSD since it's being done electronically via the brakes?

 

[Jeepster09]

What you listed should be good.

 

[mrbigboy]

Yep, looks good.
Also, you don't need gear oil with LSD additive for your 2000, but if the oil has the additive, it won't hurt anything.

 

[dfinn]

excellent, thanks!

 

[planomateo]

Looks like there are a few Advanced Auto near you, they have a $30 off via HM73BX. They also have $40 off when you spend more than $100 often (although I don't see that at the moment), this is how I've bought most of my diff oil.

I buy online and then drive to the store to pick up

 

[dfinn]

Cool, I'll check that out. I was just poking around on amazon and ebay. Looks like Amazon has Lucas for $9.

 

[Jeepster09]

I used Valvoline and it's $5.44 a quart, same in all 3.

Valvoline High Performance Gear Oil by Valvoline at Mills Fleet Farm

 

[planomateo]

That link @Jeepster09 posted has the Valvoline Synthetic on sale for $6.99 on sale / quart (regular $9.99).

I don't run dino oil.

 

[Spike555]

I used Castrol full syn 80w-90 in all three. I don't remember how much it was. Valvoline MaxLife would be my second choice, it is a full syn.

 

[KraziAzn]

It's fine to use 75w-90 for front and rear diff too?

 

[TheForger]

It's fine to use 75w-90 for front and rear diff too?

Yes, I run that in both diffs as well as the transfer case