Best trans fluid for MN6?
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,305
Likes: 5
From: Schererville Indiana
Best trans fluid for MN6?
I have read some of the posts on changing the fluid in the MN6 trans to improve shifting. Is there any consensus on which is the best... Royal Purple, Amsoil, Redline or just the stock fluid changed more often? Is there any downside to changing it, i.e. voiding the warranty etc.?
I know it's a common problem and a trait of these transmissions but I'm disappointed the way my recently acquired 07 shifts.
I know it's a common problem and a trait of these transmissions but I'm disappointed the way my recently acquired 07 shifts.
Melting Slicks
Joined: Nov 2005
Posts: 2,345
Likes: 2
From: Houston 06 C6 Ysi SC 402 fgd TX
Depending on the use there is an issue with the bushings holding the shifter bracket down.
Also there are at least 5 aftermarket shifters
Disappointed how? do you miss 3rd or 5th? mushy?
Also there are at least 5 aftermarket shifters
Disappointed how? do you miss 3rd or 5th? mushy?
Drifting
Joined: Apr 2006
Posts: 1,276
Likes: 5
From: Ambler Pa.
I have read some of the posts on changing the fluid in the MN6 trans to improve shifting. Is there any consensus on which is the best... Royal Purple, Amsoil, Redline or just the stock fluid changed more often? Is there any downside to changing it, i.e. voiding the warranty etc.?
I know it's a common problem and a trait of these transmissions but I'm disappointed the way my recently acquired 07 shifts.
I know it's a common problem and a trait of these transmissions but I'm disappointed the way my recently acquired 07 shifts.
Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,305
Likes: 5
From: Schererville Indiana
By comparison, my old 91 Srealth with 185k on it shifts like butter. I know from that car that the trans fluid can make a big difference.
Intermediate
Joined: May 2010
Posts: 29
Likes: 0
From: Wiesbaden Hessen
RP SyncroMax made a world of difference. Then added a MGW shifter a week after that. Finally got the desired shift feel that I thought a Vette should have from the day it rolled off the assembly line.
-Nick
-Nick
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Thread Starter
Drifting
Joined: Jan 2010
Posts: 1,305
Likes: 5
From: Schererville Indiana
Pretty hard to argue with that... If there was an advantage to using one of the other ATF's out there you would think they would endorse it.
Pro
Joined: Jul 2006
Posts: 608
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From: LZ IL
Race Director
Joined: Sep 2000
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From: Missouri City, TX
Drifting
Joined: Apr 2008
Posts: 1,955
Likes: 22
From: Lehigh Valley Pennsylvania
Most are better than the factory fluid, and most people will have not tried multiple fluids to give you any reliable comparison. It will be more of whether people are fans of a particular brand. I figured you can't go wrong with Amsoil, so that is what I used.
Drifting
Joined: Oct 2000
Posts: 1,257
Likes: 6
From: San Jose, CA, USA
Friend of mine runs a performance vette and camaro shop in NC. The recommendation he got from an actual Tremec engineer was to run only Mobil1 ATF, which could very well also be the factory fill.
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
I drained the factory fill from my 09 Z06 and replaced with the RP Syncromax and drove it. It was way worse then the factory fill. Drained it, and replaced with Mobil1 ATF and it appeared to be about the same as the factory fill, maybe a tad better. I've put around 5,000 miles on the car since the fluid change and it's a little better shifting 1-2 & 2-3 but I'm still not happy having to granny shift to keep the nibbles/grinds in check. I get my 56 down off the lift every once and awhile and am surprised how well it shifts(1970 Muncie 4 speed/Hurst shifter). It's stiffer shifting then the Z06's transmission but goes into gear with no syncro nibbles/grinds.