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View Full Version : Gear Oil: Royal Purple Gear Max vs. Redline MT90



SOHC240
05-25-2005, 01:27 PM
I need to know which of these 2 would help for smoother shifts, hopefully from people who have tried both kinds or gear oil.

I just put some Royal Purple Gear max full synthetic 75-90 in my tranny and although it helped alot, I still have a small '[censored]' into 2nd gear and fast high rpm shifts.

I would just like to know how much better or worse redline mt90 would be and if it is worth switching.

Thanks!

insndrvr
05-25-2005, 05:27 PM
I have used Redline MT 90 in two of my trannies, one with 220K miles, seemed to help, but the tranny still ground with fast shifts. And in a 16k mile tranny. This tranny does not like fast shifts either, but it's possible it's just not very broken in yet. I got it from the junk yard, and never used it with anything other than MT 90.

Kingtal0n
05-25-2005, 06:35 PM
both are GL-4, both are synthetic, both are expensive. I started with Mobil 1, got some grinding in 4th, switched to MT-90, Problem fixed, and never looked back.

Brad
05-25-2005, 06:51 PM
i had some 1-2 crunch and some 3-4 grind. switched to heavy shockproof and the tranny got better after a month or so and now is smooth as silk

[censored] is thick though...looks like a strawberry milkshake

SOHC240
05-27-2005, 01:36 PM
So anyone tried both?

So far it looks like maybe I should go with the Redline MT90.

Thanks

JimStinksAtDorifto
05-28-2005, 12:22 PM
mt90 completely got rid of the LOUD bearing noise I had on an RX-7 Tranny. It also let me shift 3-2 which was impossible at the time due to the tranny's condition.

mt90 fo life

Five10PacksDE
05-28-2005, 11:50 PM
i had some 1-2 crunch and some 3-4 grind. switched to heavy shockproof and the tranny got better after a month or so and now is smooth as silk

[censored] is thick though...looks like a strawberry milkshake



Yeah, I got that stuff too, and it took a while for the kitty litter to soak it up. I thought it looked like a cherry Slurpee. I got my redline hte a lil cheaper than the Mobil One. It was through someone I know, but even then , I know another shop selling redline for $9 a quart 10 minutes away. Has anyone tried GM syncromesh? I know a lot of Honda and Mitsubishi people that love syncromesh.

Homer_Simpson
05-29-2005, 12:21 PM
I've got GM Synchromesh Friction Modified in my 168k miles KA tranny. Its pretty good compare to the OEM and Redline stuff I had in there before. With the other 2 fluids I would grind 2nd and 3rd all the time, now its like butter. I could actually get it into 1st when the car is rolling, and this is something that was impossible do do with the other 2 fluids. I'm going to try that GM Synchrotorque (sp?) next.

cellude
05-31-2005, 10:37 AM
http://forums.freshalloy.com/ubbthreads/showflat.php?Cat=&Board=UBB27&Number=67707857&Foru m=All_Forums&Words=gm%20syncromesh&Match=And&Searc hpage=0&Limit=25&Old=allposts&Main=67703163&Search =true#Post67707857

TeckniX
05-31-2005, 11:18 AM
I would definitely go for the GM synchromesh transmission fluid (PN 12345349) <- I think that's the right one.
Their tranny fluid is used in all of their corvette trannys and has never failed to impress me. Even when all gears are [censored] this thing will make it feel like butter :P