Changing my differential fluid.

diffs and transfer case yes. transmission no. it is best to use exactly what the dealer would use in the transmission which i can't remember just now.

 

I think the answer is IT DEPENDS on the gear oil you choose. I run Amsoil-recommended Severe Gear 75W-90 in my front & rear diffs, transfer case, and transmission.

 

Also I was thinking automatic transmission. It might be different for a manual.

 

Good point. Obviously, my answer was predicated on the opposite (manual transmission) assumption.

 

not in an auto youll need ATF which is very different. yes in both diff's and the transfer case...thats what i do i get a carton of quart jugs in mobil1 synthetic

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90 every 30-35k and change all 3 at the same time with the same oil in all...toyota makes their fluids very easy to change. to drain plugs!

 

doesn't the GL-4 specificity only apply to the tranny? Won't any GL4/5 oil work for everything else? I don't even know what I have in my tranny, I bet it's GL4/5. I think the purely GL5 stuff is what you don't want in there.

 

The short answers are yes and yes.

GL-4 and GL-5 are American Petroleum Institute (API) service characteristic ratings for (spiral-bevel and) hypoid gear lubricants. The primary difference between GL-4 and GL-5 is the amount of extreme pressure additive package. GL-4 has less than GL-5 does. The caution here tends to be with regard to certain manual transmissions. The GL-4 specification is primarily used for those with high yellow metal content (e.g., brass and/or bronze sometimes found in manual transmission syncros). Under certain conditions, the higher additive content can corrode yellow metals. As I understand it, certain lubricants (e.g., Amsoil Severe Gear 75W-90) are safe for use in both applications.

 

Thanks. My first gen was 10mm top and bottom.

 

Thank Goodness for this thread!
About to do The Diffs and Tranny next week for a trip to tahoe

 

I'm in the middle of doing mine too. Gonna try these 10mm hex drain plugs from Low Range so I can just use a single wrench to change gear oil in the diffs and transfer case.

 

Hi, I drive a 02' 3.4L v6 4x4 automatic. Going to do the fluid changes soon.

So transfer, front and rear diff use

$30 75w-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

75w-90(owners manual say use SAE 90 or 80W-90 for rear)

Transmission useToyota ATF D-II or Dexron III. Sound right?

Thanks

 

This is correct

 

Is that the same for the 2.7L 4cyl 2wd?

 

Pretty much except you don't have a front diff and a transfer case.

 

Any recommendations for atf? Was going to order toyota brand type IV, but that's not going to work now. Thanks

 

What year is your truck?

It could be the Type IV or WS Fluid.

RJM

 

I use Amsoil 80w-90 Synthetic in both front and rear differentials.

It was recommended by one of the best gear shops here in the Northwest.

RJM

 

02' extended cab 3.4l v6 4x4. Any recommendations for atf would be great. Thxs

 

This is what I use in the 1995 Corvette differential (clutch-pack LSD): http://www.amsoil.com/shop/by-product/gear-lube/severe-gear-75w-90

This is what I use in the 2006 Tacoma 2wd differential (open diff): http://www.amsoil.com/shop/by-product/gear-lube/75w-90-long-life-synthetic-gear-lube

I rarely push either of them very hard, and it's very nice knowing they can both comfortably go an extended interval before draining. Well worth the money.