Go Back  YotaTech Forums > Toyota SUV & Truck Tech > 86-95 Trucks & 4Runners
Reload this Page >

1992 Toyota Pickup 5 Speed Manual Transmission Fluid Change

Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

1992 Toyota Pickup 5 Speed Manual Transmission Fluid Change

Old 01-01-2019, 10:19 AM
  #1  
Registered User
Thread Starter
 
Join Date: Dec 2018
Location: Pacific Northwest
Posts: 3
Received 0 Likes on 0 Posts
1992 Toyota Pickup 5 Speed Manual Transmission Fluid Change

When trying to decide which fluid to use in my pickup the owners manual is only slightly helpful in narrowing it down. It gives me the option for the following:
GL-5 75W-90
GL-5 80W-90
GL-4 75W-90
GL-4 80W-90

Out of the four choices (not accounting for multiple brands) there should be one that provides the best performance and protection, although, I realize the difference may be so negligible that I wouldn't be able to discern which one. However, I don't want to do four fluid changes to find the right one. The only easy decision was to go with a full synthetic.

After reading many other threads on this topic as well as a few outside articles I'll link or attach below the top three contenders are:
1) Redline MT-90 (50304)
2) AMSOIL 75W-90 (MTGQT-EA)
3) Royal Purple 75W-90 (01300)
Honorable Mention: Ravenol VSG SAE 75W-90

I was ready to buy the Redline MT-90 until I read the product description of the Royal Purple which claimed it met both GL-4 and GL-5 requirements as well as being safe for yellow metals. What are everyone's experience with one or more of these products specifically in 1994 and older Toyota 5-speed manual transmissions? Did I miss any other options that should be considered? If you favor one over another tell me why! If one gave you horrible results please explain that as well. My goal is to provide others with as much info in one place as possible as well as figure out which fluid I should go with too. Thanks in advance.

For a little background info my pickup is a 22R-E 2wd with 150,000 to 180,000 miles on it (broken odometer). I live in the PNW therefore the summers as well as winters are mild. Likely only to get below freezing a few weeks a year and maybe a handful of days over 100 F. I've read somewhere that the GL-5 oils of today no longer are corrosive to brass metals, but, I don't know that to be true for them all.


Also one should check out https://www.bobistheoilguy.com/forum...22Gear_oil_API
Attached Files
File Type: pdf
Transaxle_oil.pdf (843.5 KB, 21 views)
Unicorn_Prince is offline  
Old 01-01-2019, 11:29 AM
  #2  
Registered User
 
Join Date: Aug 2013
Location: Southern Arizona
Posts: 3,000
Received 66 Likes on 57 Posts
The purported corrosiveness of GL-5 lubricants is probably not a issue now; if it ever was..

It is the increased slipperyness of them over the GL-4 spec gear oils that might be problematic.

While the GL-5, or GL-4-GL-5 multi oils are best for differentials, the plain GL-4 spec oils often give better results in trannys where worn syncro action is further weakened by the extra slippery GL-5 oil.

It's really up to you. Many use GL-5 oils with no complaint. I do use GL-4 oils in my own trannys.
millball is online now  
The following users liked this post:
Unicorn_Prince (01-01-2019)
Old 01-01-2019, 05:37 PM
  #3  
Registered User
 
Paul22RE's Avatar
 
Join Date: Feb 2018
Location: NNJ
Posts: 210
Received 20 Likes on 16 Posts
I use Amsoil GL-4 in the tranny & transfer case & Amsoil GL-5 in the diffs. 75W-90 in all

GL-4: https://www.amsoil.com/shop/by-produ...?code=MTGQT-EA

GL-5: https://www.amsoil.com/shop/by-produ...?code=FGRQT-EA

Last edited by Paul22RE; 01-01-2019 at 05:47 PM.
Paul22RE is offline  
The following users liked this post:
Unicorn_Prince (01-02-2019)
Old 01-02-2019, 03:48 AM
  #4  
Registered User
Thread Starter
 
Join Date: Dec 2018
Location: Pacific Northwest
Posts: 3
Received 0 Likes on 0 Posts
Originally Posted by Paul22RE View Post
I use Amsoil GL-4 in the tranny & transfer case & Amsoil GL-5 in the diffs. 75W-90 in all

GL-4: https://www.amsoil.com/shop/by-produ...?code=MTGQT-EA

GL-5: https://www.amsoil.com/shop/by-produ...?code=FGRQT-EA
Yeah the only real question I think I have now is to choose between Amsoil and Redline. The owner's manual says to use GL-5 90W in the rear differential. I think I will end up using a synthetic GL-5 75W-90, however.

1992 Toyota Pickup 2WD
Unicorn_Prince is offline  
Old 01-02-2019, 05:41 AM
  #5  
Registered User
iTrader: (2)
 
se7enine's Avatar
 
Join Date: Nov 2006
Location: Reno , Nevada
Posts: 532
Likes: 0
Received 11 Likes on 11 Posts
Amsoil is cheaper by a couple $. For me MT-90 is easier to come by so that's what I always use. Never used anything else but never replaced a trans before either so I'm sticking with MT-90. It's helped fix neglected transmissions that I've purchased. I'm sure the same can be said for Amsoil.
se7enine is offline  
The following users liked this post:
Unicorn_Prince (01-02-2019)
Old 01-02-2019, 07:04 AM
  #6  
Registered User
iTrader: (2)
 
Robert m's Avatar
 
Join Date: May 2006
Location: Apple Valley, CA
Posts: 1,688
Received 5 Likes on 5 Posts
Redline mt-90. I wont use anything else in my trans now. I made the mistake of putting GL5 in for about 3000 miles and it was notchy and just not smooth to shift. Drained it filled with mt-90 and it was smooth and shifted better all around.
Robert m is offline  
The following users liked this post:
Unicorn_Prince (01-02-2019)
Old 01-02-2019, 08:20 PM
  #7  
Registered User
 
Kolton5543's Avatar
 
Join Date: Mar 2013
Location: Safford, AZ
Posts: 386
Likes: 0
Received 22 Likes on 21 Posts
Mine had gl-5 in it when I bought it. Shifted smooth when I got it. After about year it started to get hard to shift. Eventually to the point where it almost couldn't be shifted without a good double clutch. I drained the synchros out with the oil.

While being on a budget to find something that would help, I tried a trick the jeep guys would do with their ax15 transmissions. I filled mine with valvoline full synthetic 10w30 motor oil. Slightly over full. It brought my gears back. Still a tad notchy. Can't usually float between gears but shifts good otherwise.

The thinner oil helps get the synchros working. Synthetic oil holds up to all the sheering forces better than conventional. I overfilled it because there are a few guys on here that claimed their trans shifted better about a pint over full. I filled mine correctly first then added some more about 1k later and it did smooth out a little more.

I'm sure theres plenty of people that will despise what I done, but it certainly worked for me. But because it worked well for me, doesn't mean it'll work good for you. If your trans still shifts pretty good then I would probably go with the tried and trued mt90.
Kolton5543 is offline  
The following users liked this post:
Unicorn_Prince (01-03-2019)
Old 01-03-2019, 05:39 AM
  #8  
Registered User
iTrader: (1)
 
Join Date: Dec 2011
Location: sammamish, wa.
Posts: 2,038
Likes: 0
Received 27 Likes on 26 Posts
MT-90 here and replace you shifter seat bushings while you at it. Marlin has them cheap.
thefishguy77 is offline  
The following users liked this post:
Unicorn_Prince (01-03-2019)
Old 01-03-2019, 03:08 PM
  #9  
Registered User
Thread Starter
 
Join Date: Dec 2018
Location: Pacific Northwest
Posts: 3
Received 0 Likes on 0 Posts
Originally Posted by thefishguy77 View Post
MT-90 here and replace you shifter seat bushings while you at it. Marlin has them cheap.
The YouTube vids I watched made that shifter bushing look pretty straight forward which is great because last summer it was randomly popping out of 3rd unless I held it in there. It mysteriously "fixed" itself for now but I suspect replacing those bushings will fix it properly.
Unicorn_Prince is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
tarra.dactyl
95.5-2004 Tacomas & 96-2002 4Runners
9
04-20-2017 10:21 AM
jacobtodd123
95.5-2004 Tacomas & 96-2002 4Runners
0
02-25-2015 07:53 PM
rockclimber
95.5-2004 Tacomas & 96-2002 4Runners
16
01-05-2013 08:52 AM
90-3vzeslug
86-95 Trucks & 4Runners
6
10-06-2009 05:17 PM
sage
95.5-2004 Tacomas & 96-2002 4Runners
1
06-22-2003 08:38 PM


Thread Tools
Search this Thread
Quick Reply: 1992 Toyota Pickup 5 Speed Manual Transmission Fluid Change


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: