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1990 Toyota 4x4 transmission fluid type #5387912 03/28/20 01:08 PM
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R1jake Offline OP
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I am trying to figure out if my 1990 Toyota 4x4 22r manual transmission (my baby) has any yellow metals in the transmission or transfer case?? While researching I keep seeing everyone pretty much recommend a GL-5 80/90 in the diffs. For the manual transmission and t case I keep seeing GL-4 or GL-5. Back when I had my 00 Volkswagen GTI I couldn’t use a gl-5 due to it having yellow metals in the manual transmission. So I want to make sure this is not the case on my truck. While researching I have found one person mention yellow metals in the transmission of my truck. Not sure if this is true?? Everyone else is saying GL-4 or GL-5 80-90
I figured this is the place for the correct answer and hope you all can help.

Last edited by R1jake; 03/28/20 01:10 PM.

Yamaha R1 5vy
94 Ford E150
09 Pontiac vibe AKA Toyota Matrix
02 dodge neon my winter car, refuse to drive my van in the salt.
Re: 1990 Toyota 4x4 transmission fluid type [Re: R1jake] #5387946 03/28/20 01:41 PM
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bronx Offline
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I used redline MT-90 in my 2008 Tacoma 5 speed manual for years without issue. I sure it will work great in your transmission and transfer case.

https://www.redlineoil.com/mt-90-75w90-gl-4-gear-oil

Re: 1990 Toyota 4x4 transmission fluid type [Re: R1jake] #5387950 03/28/20 01:47 PM
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kschachn Online Content
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Originally Posted by R1jake
I am trying to figure out if my 1990 Toyota 4x4 22r manual transmission (my baby) has any yellow metals in the transmission or transfer case?? While researching I keep seeing everyone pretty much recommend a GL-5 80/90 in the diffs. For the manual transmission and t case I keep seeing GL-4 or GL-5. Back when I had my 00 Volkswagen GTI I couldn’t use a gl-5 due to it having yellow metals in the manual transmission. So I want to make sure this is not the case on my truck. While researching I have found one person mention yellow metals in the transmission of my truck. Not sure if this is true?? Everyone else is saying GL-4 or GL-5 80-90
I figured this is the place for the correct answer and hope you all can help.

The place for the correct answer is your owner's manual. What does it say?


1994 BMW 530i, 252K
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Re: 1990 Toyota 4x4 transmission fluid type [Re: R1jake] #5387995 03/28/20 02:50 PM
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CT8 Offline
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i used MT 90 in my 92 and 06 4X4s Tacomas manual transmissions


2015 F150 2.7
2018 F350 6.2
Re: 1990 Toyota 4x4 transmission fluid type [Re: kschachn] #5388003 03/28/20 02:56 PM
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R1jake Offline OP
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This I do not have, which is very weird I have everything else including the original window sticker. Somewhere along the line the manual is missing.


Yamaha R1 5vy
94 Ford E150
09 Pontiac vibe AKA Toyota Matrix
02 dodge neon my winter car, refuse to drive my van in the salt.
Re: 1990 Toyota 4x4 transmission fluid type [Re: CT8] #5388007 03/28/20 02:57 PM
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R1jake Offline OP
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Originally Posted by CT8
i used MT 90 in my 92 and 06 4X4s Tacomas manual transmissions

This is what I was thinking, or possibly amsoils gl-4.


Yamaha R1 5vy
94 Ford E150
09 Pontiac vibe AKA Toyota Matrix
02 dodge neon my winter car, refuse to drive my van in the salt.
Re: 1990 Toyota 4x4 transmission fluid type [Re: R1jake] #5388008 03/28/20 02:58 PM
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R1jake Offline OP
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Does anyone know if there are any yellow metals in the manual transmission?? Or the t case??


Yamaha R1 5vy
94 Ford E150
09 Pontiac vibe AKA Toyota Matrix
02 dodge neon my winter car, refuse to drive my van in the salt.
Re: 1990 Toyota 4x4 transmission fluid type [Re: R1jake] #5388225 03/28/20 07:03 PM
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zeng Offline
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Typically manual transmission has yellow metal synchronisers (say 90ish % if not 100 IME , no evidence or proof though), not yellow metal gears or journal bearings etc .
I'm very confident this yota manual transmission has yellow metal synchronisers . Tcase I'm not so sure as some may not have yellow metals .
GL4 is about 'smooth shift' .Period. Though GL5 (often friction reducing) of similar viscosity grade typically offers higher MOFT and gears/bearings components protection .
If 'smooth shift' is of no concern to one, by all means carry on with a GL5 IMO .

Last edited by zeng; 03/28/20 07:04 PM.
Re: 1990 Toyota 4x4 transmission fluid type [Re: zeng] #5388730 03/29/20 03:00 PM
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R1jake Offline OP
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Originally Posted by zeng
Typically manual transmission has yellow metal synchronisers (say 90ish % if not 100 IME , no evidence or proof though), not yellow metal gears or journal bearings etc .
I'm very confident this yota manual transmission has yellow metal synchronisers . Tcase I'm not so sure as some may not have yellow metals .
GL4 is about 'smooth shift' .Period. Though GL5 (often friction reducing) of similar viscosity grade typically offers higher MOFT and gears/bearings components protection .
If 'smooth shift' is of no concern to one, by all means carry on with a GL5 IMO .


I am definitely going to go with GL-4 in the transmission and t case as well I suppose.


Yamaha R1 5vy
94 Ford E150
09 Pontiac vibe AKA Toyota Matrix
02 dodge neon my winter car, refuse to drive my van in the salt.
Re: 1990 Toyota 4x4 transmission fluid type [Re: R1jake] #5388865 03/29/20 07:00 PM
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Originally Posted by R1jake


I am definitely going to go with GL-4 in the transmission and t case as well I suppose.


https://www.bobistheoilguy.com/foru...0f-need-help-choosing-mt-oil#Post5282140


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