So guys I have been looking for a solid week now on the specific specs for a transmission, transfer case, and differential fluids with no luck on a straight or confident answer. All I find answers for are 1st or 3rd, or 4th gen 4runners. BTW I have a 94 3.0, 5speed 4x4, I would really like a good answer and a confident one just how much in each and what weight and brand you recommend please. Thanks guys 👍🏻👍🏻👍🏻

 

You most likely won`t find a answer to your question .

so many brands a few different weights .

Myself I have no idea how much they take without looking it up because mine get filled out of a 5 gallon bucket with a pump.

I run brands that are sold local Wolfs Head and Pitt Penn

As for weights I have run 85w140 because I had a 55 gallon drum

When that was used up I bought 75w90 Myself other then it being a little thinner on those cool morning below 0 F I can`t tell a real difference.

It can get confusing calling for all different weights myself they all got the same .

No major failures out of the fleet as of yet . After the vehicles came to me.

Then the whole synthetic/ non synthetic debate .

No wonder your confused.

Get the Factory Service Manual for the year and follow those guide lines you can`t go wrong

 

Hey thanks for the info man every bit counts, this is my first Toyota I live in Ohio and this truck is from Cali and rust free and that is very rare so I just want to make sure I do everything correct and get the most out of this. I figured at the shape it is in if I keep the frame clean and paint it every other summer in between winters the body is going to out live the motor and trans with 188,xxx miles on them.

 

Do would it be safe to just run 80w-90 in everything? Transmission, transfer, and diffs? I will just fill all till its topped off then

 

You fill up a standard transmission and or differentials until the 80-90 at gear oil starts to drip out of the fill hole, it is not a precise measurement but, you can't screw it up if you over fill it because you just let it drip settle then cap it off.
I use straight gear oil not for limited slip in my differentials and my transmission has not been drain and filled yet since owning it but, when I put the dual transfer cases on next month, the trans will be drained and refilled with straight gear oil then.
Both of my 85 Extra-Cab differentials are locked and freshly oiled with 80-90 wt gear oil purchased at any auto parts store.

 

Yes, start with the manual. It has everything you need to know.
http://web.archive.org/web/201210210...nce/2maint.pdf

(You spent a "solid week" and didn't think to look in the manual?)

 

Thanks for the advice guy I appreciate it, and I work out of town so I'm not home to look at the manual, and I'm not joking when I say that nothing comes up. Just opinions on what other people use I have gotten and huge range of answers

 

Just make sure you use GL-5 rated fluid in the differentials. The hypoid gears require it. The transmission and t-case can use either GL-4 or GL-5, but the manual transmission synchronizers will work somewhat better with GL-4.

 

Btw thanks scop103 that is exactly what I am looking for.👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻