transmission and diff fluid types? - Toyota Nation Forum : Toyota Car and Truck Forums

1990rolla · 02-11-2010, 03:34 PM

i just got my transmission and diff rebuilt a couple of days ago and the mechanic included everything even filter but not fluids. it was a bench job just to let you guys know. Well he told me that the diff uses the same type of fluid as the transmission and i was curious to see what you guys had to say because it sounds a little weird?

***SCT*** · 02-11-2010, 04:05 PM

Automatics require ATF fluid for the hydraulics that works it, unlike a manual where it's only a bunch of gears. According from the factory service manual.....

Automatics: ATF Dexron II
Fill the transmission through transmission dipstick tube, drain on bottom of transmission on the transmission fluid pan.

The differential takes 75W-40 Gear Oil. The fill plug will be in the center of the cover. The cover itself is facing towards te firewall behind the transmission. The drain plug is on the bottom, below that cover.

Manuals: SAE 75W-90 Gear Oil (API GL4 or GL5)
Because this is not an automatic, it only takes gear oil.

1990rolla · 02-11-2010, 04:16 PM

yes i know all the locations and such (i took the tranny off myself) and i also thought that the diff needed gear oil but the mechanic said it needed atf aswell? im confused.

***SCT*** · 02-11-2010, 04:22 PM

Automatics take two fluids....

... do you have an Automatic?

If you do, the automatic trans has two separate sections inside: the automatic trans itself that requires ATF Dexron II fluid for the hydraulic, automatic workings of the gears.... And where your CV shafts goes in, the second section called the differential, takes 75W-50 Gear Oil.

1990rolla · 02-11-2010, 04:40 PM

yes i know they are separated and i just called autozone aswell and they told me it takes atf aswell. i think im going to go with atf because thats what the mechanic told me and i have warranty with the tranny so i dont want to void the warranty

***SCT*** · 02-11-2010, 05:03 PM

Corrected... I got it mixed up...

The diff does take ATF as well, whoops. But you have to fill them both separate. I had mine dried up but ran fine, until the diff killed itself.

1990rolla · 02-11-2010, 05:22 PM

no problem man.

i know the tranny takes 2.6 quarts but i forgot the capacity of the diff.

would you happen to know by any chance?

***SCT*** · 02-11-2010, 05:25 PM

1.5 qts for the diff, for sure. and yea, 2.6 for thee trans.

1990rolla · 02-11-2010, 07:36 PM

ohh ok man, thanks