Supra Forums banner
1 - 6 of 6 Posts

·
Registered
Joined
·
75 Posts
Discussion Starter · #1 ·
I recently replaced my transmission oil with Red Line MT-90 and was wondering what MKIII owners think of this oil. I read many of the posts on this subject including the one that says Red Line MT-90 is not recommended fro the MKIII turbo. My service manual specifies GL-4 oil which is what Red Line MT-90 meets so I went ahead and used it. Although my opinion is subjective, I do think my transmission shifts easier. Has anyone experienced problems with MT-90? Have you been happy with MT-90?
 

·
Dr. Jeff Lange
Joined
·
9,352 Posts
I've never heard anyone have any problems with MT-90. I'm running it in my Supra as well as in my Corolla GT-S. I love the stuff... I could just drink it!!!!

:p
 

·
1991 1JZ
Joined
·
1,157 Posts
made no difference in my w58. my tranny to begin with really shifts fine, however the stick always got EXTREMELY hot. my shifter knob started to melt when i shortend it. also on hot days the tranny would get so hot that my radio would stop working. this is with whatever gear oil came stock, and mt90.

i dunno if this is some problem existing with the trans it self, but i switch to mobil one 75w90 gear oil and it shifts smoother, and the stick NEVER gets too hot to touch anymore.
 

·
Registered
Joined
·
344 Posts
mt-90 def made a differerence for me. shifts smoother but its not going to perform any miracles. no fluid will. but it impressed me enough to buy a second time when i changed my driveshaft so i guess i recommend it.
 

·
Registered
Joined
·
193 Posts
I had problems with MT-90 in my 91 R154.

The synchros moved too freely resulting in difficult shifts from 1-2 and 2-3.

This is a case where the reduced friction is too good and an approriate synthethic worked much better for me.

Granted, I drive is 100 degree plus weather most of the time.
 
1 - 6 of 6 Posts
Top