Tranny, T-case and Diff fluids?

Im just over 100k in my 2001 ExCab TRD 4x4 5 Speed Tacoma, so its time to do these fluids.
What is everyones opinion on going these routes for replacement fluids?
This is my first time doing this so im trying to make sure im ordering the correct fluids and weights and all. Thanks!

For the transmission:
http://www.amsoil.com/storefront/mtg.aspx

For the t-case, front and rear diff:
http://www.amsoil.com/storefront/fgr.aspx

 

You like putting the best in your truck huh?

Yeah those will definitely work.

And welcome to the site

 

First, do you have your owner's manual? The specified grades/weights for your truck and condtions will be in there.

The Amsoil manual tranny oil is the correct grade and spec. Synthetic is nice for the transmission. I use the Red Line synthetic GL4.

http://www.redlineoil.com/product.aspx?pid=46&pcid=7

I believe the tranfer case should take the same as the transmission, but I may be high and I don't have my manual handy. It's been about 10k miles since I did mine...

For the diffs, it kinda depends. I think the maint. interval is 30k miles. But do you have the diff breather mod? If not, and you get into deeper water or mud and submerge the diffs, you'll need to change the oil anyway. In that case, I wouldn't bother with Amsoil synthetic, because it would be a waste of money. I just used Valvoline petro based. I think this is it:

http://www.valvoline.com/products/brands/valvoline/gear-oil/61

Oh, and welcome! Wow, post #1.

Hi, steve-o

 

agree with scocar. Trans and transfer are the same, sever gear 75-90, gl4. this may be beating a dead horse, never seem to get a clear answer, i hear gl5 can fuck up softer metals, anyway, yes. 2.3 and 1.2qt respectively i think. A word of advice, get the pump for that damn amsoil bottle for doing the trans, no room to get anything above the fill hole. 10 min job turned into a pain in the ass for me. ended up routing a 1/2 inch tube down thru engine bay into fill hole and filling it from there. I suck.
I used castrol 80 90 hypoi gear oil for rear......dont know if it matters, everything i read said HYPOID was necessary

 

And x2 on the redline MT-90

You're correct on the GL-5 destroying the brass syncros. Stick with anything GL-4

 

YES GET A PUMP! Especially for the front diff! And go get all the factory crush washers from Toyota. The tranny and transfer take the square-cut aluminum ones, the rear diff takes the steel crush washers top and bottom, and the front, oh shit, the bottom one is a big, special copper one, and I think the top is the same as the ones on the rear diff.

If the rear diff plugs have not been off in a long time and were not torqued corrrectly or used the wrong crush washer, they can be a royal pain to get off. Start by taking the fill plug off. That way, you're not screwed with an empty diff and no way to refill it if you have issues getting the fill plug off.

 

+1 definitely get the washers. Im a huge advocate of spending the 2$ to ensure you dont loose an oil plug and burn something up. Think of it like your paying $2 insurance on a $1000 part. A buddy used to talk shit because every time i changed oil in the motorcycle i used a new washer. He ended up loosing a plug on I 95. Didnt destroy the motor or crash, but he uses a new washer now. Not to say that the washer would prevent it totally, im sure there was a torque issue as well.

Torque, rear dif...I think 36 and trans 27?

 

The owner's manual (1999) says hypoid oil for the diffs. Can you NOT use a synthetic like RP in there? Are they not hypoid oils?

 

This oil suction gun is worth the money

 

I went with the Lucas 75-90 Synthetic in front/rear diff and transfer case

 

In preparation for completing my swap to Amsoil, I visited my local stealership earlier today. scocar's descriptions are exactly right. Here are the part numbers:
- Transmission = 2 x 90430-18008 ($1.51/ea)
- Transfer Case = 2 x 90430-18008 ($1.51/ea)
- Rear Differential = 2 x

$15 12157-10010 Toyota Oil Drain Plug Crushable Steel Gaskets Set of 10 OEM 12157-10010

12157-10010 ($1.23/ea)
- Front Differential = 1 x 12157-10010 ($1.23) + 1 x

$9 90430-24003 Front Differential Drain Plug Gasket

90430-24003 ($1.74)

Total cost for this "insurance" was less than $13, including tax.

 

Why does the service manual say GL-5?