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With the revival of the Redline thread, I wanted to know what you guys think about the oil I just put in my tranny...
This stuff is exactly like MT-90 except for the GL5 rating... I went to the only store in the city that carries redline stuff, and this was the closest thing to MT90 I could get... Should I change it or do you think I am OK? Still shifts pretty good.
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-Simon
B14 200SX SE-R w/ Injen short-ram, 91 SE-R Intake cam, JUN Ultralight flywheel, ACT HD clutch and street disc, Greddy SP cat-back, strut bar from courtesy, and the legendary B14 hypercos/AGX combo.
Not sure. I'm wondering along the same line. I bought Lucas 75w90 Synthetic thats desgined for High performance and LSD equipped trannys. It says its a replacement for GL5 and GL6.
The 75W90 is not safe on the Nissan synchros. It will shorten their life span drastically. MT-90 is specially formulated for GL-4 applications like the Nissan synchros.
IMO you should get the correct type and drain your tranny.
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Brandon
'02 Maxima SE 6MT
'96 G20 (SOLD)
The 75W90 is not safe on the Nissan synchros. It will shorten their life span drastically. MT-90 is specially formulated for GL-4 applications like the Nissan synchros.
IMO you should get the correct type and drain your tranny.
What makes nissan syncros so special. They are made of brass
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06 monaro cv8
91 ser 311whp@15psi
92 nx 185 whp all motor sold!!
sr20ve in the House with some freeze
CT SUPERHERO
I'm gonna call Courtesy, Mossy, and Redline tommorow and see what they say... I kinda don't wanna change the fluid again, but I guess I might have to. Maybe I could just refil the old oil bottles and try to return it
I just did some serious research and i had no idea that our transmissions could suffer damage from a GL-5 oil. When i had to replace my driveaxles back in september i topped off the tranny with some valvoline synthetic 75-90w i had laying around (which is GL-5). i just ordered some redline mt-90 and i will change it out as soon as i recieve it. on the redline site it says that GL-5 will reduce syncro life by half...no good. I wonder how much damage i did by topping off the tranny with GL-5 after the driveaxle swap. It's only been about 6 months.....but i beat on my car pretty bad.
The 75W90 is not safe on the Nissan synchros. It will shorten their life span drastically. MT-90 is specially formulated for GL-4 applications like the Nissan synchros.
IMO you should get the correct type and drain your tranny.
I thought mt-90 was 75w90...? It's just that it's GL-4, not 5.
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My real name is Kyle
2002 Maxima SE (6MT) -Drop-in K&N and a brand new longblock VQ35
1994 G20 - SR20VE, JWT pop, SSAC 2.5", 2.5" VRS catback
The guy I talked to at Redline said the same thing that the guy reported on the Redline thread. Bottom line, although the GL5 75W90 doesn't eat Nissan synchros, it does have a friction agent in it that makes shifting harder. I know now to always go with MT-90!
Gonna go across the Golden Gate Bridge to get some MT-90 now.... Some times i don't know whether this forum is a curse or a blessing
jk, thanks for the input.
damn mackenzie...
Last edited by ResidentWarui : 03-23-2004 at 09:11 PM.
I thought mt-90 was 75w90...? It's just that it's GL-4, not 5.
I was not referring to MT90. He (ResidentWarui) stated he used 75W90 Redline Gear Oil. There is a difference.
Sorry I did not clarify which Redline 75W90 I was referring to.
Here:
THIS ONE IS BAD FOR NISSAN SYNCHROS (hard shifts, etc.) 75W90 Gear Oil - the preferred product in nearly all car and light truck differentials, both conventional and limited-slip. 75W90 is preferred for most racing applications. It contains friction modifier which is recommended for limited-slip units. 75W90 Gear Oil can be used in many transmissions and transaxles; however, other Red Line lubricants have better frictional properties for rapid synchronization. Exceeds API GL-5.
THIS IS THE CORRECT 75W90 TO USE MT 90 - Manual Transmission/Transaxle Lubricant. A 75W90 GL-4 gear oil which is designed for manual transmissions which require 75W90, or 90 GL-4 gear oils or motor oils. Uses the same chemistry as MTL , but is a 90 WT in order to satisfy certain manufacturers which recommend SAE 90 GL-4 gear oils.
Just put the MT-90 in... MUCH BETTER! Shifts into first easier than ever.
Oh yea, and for those of you who made the same mistake I did, don't try to save the old 75W90... In my case I had the GL5 stuff in for about 200 miles and figured I could re-bottle and sell it to some cheap guy for $5/ bottle. Anyways to make a long story short it ended in a huge disaster, big pool of tranny fluid on the floor.... Kinda hard to do this alone without a clean pan that will catch a lot of oil. That fluid really comes rushing out. Glad I didn't try this at home...
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It's just that it's GL-4, not 5.
