Transmission Oil
#1
Transmission Oil
I was at http://www.finishlineperformance.com and planned on getting tranny oil...my question is, they have two. MT-90 and MTL...which is better and why?
#2
Registered
Call them and ask or go to the Redline web site and read about each type. One thing to be careful of if you're also going to change the differential oil is to get the type of oil for LSDs (assuming your model came with an LSD).
#4
INDY RX8 CLUB - Officer
The MT-90 is a higher weight and is the one you need (I use it in my 8). I ran (and have 2 bottles still laying around) MTL in my miata. The MTL is a 70-85 GL4.
#6
Lubricious
Join Date: Oct 2003
Location: SF Bay Area, California
Posts: 3,425
Likes: 0
Received 4 Likes
on
4 Posts
The MT-90 matches the recommended viscocity. I have read reports where people swear by a *mixture* of MTL and MT-90 as having the ideal shifting properties. I did read someone on this forum not long ago who claimed a 2-to-1 mixture (2 parts MT90 to 1 part MTL) was just right. I'm using just MT-90 and it seems fine. It might have something to do with climate too. I imagine adding the lighter MTL might make more of a difference in a cold climate.
#9
Lubricious
Join Date: Oct 2003
Location: SF Bay Area, California
Posts: 3,425
Likes: 0
Received 4 Likes
on
4 Posts
I guess you can't go wrong with the Mfr. service interval. But you will notice on the first change, whether it's at 5K, 10K or 30K, the fluids will be almost silvery from the amount of wear metal from break-in. There's no oil filters, just magnetic plugs and they obviously only grab particles over a certain size. I don't know if all this metal makes any difference but I like the idea of getting it out of there before 30K, at least on the first change.
Thread
Thread Starter
Forum
Replies
Last Post