[Z06] Tranny fluid change
Thread Starter
Advanced
Joined: Jan 2007
Posts: 62
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From: San Diego CA
Tranny fluid change
Have any of you tried changing your tranny fluid with Mobil 1 syntec? I assume the weight should be 5w-30 since it's the thinnest. Looking for something to improve smoother shifting in addition to not voiding my warranty if anything should happen down the road. Any feedback would be great! Thanks!
Drifting
Joined: Jan 2004
Posts: 1,419
Likes: 6
From: Alamosa CO
Have any of you tried changing your tranny fluid with Mobil 1 syntec? I assume the weight should be 5w-30 since it's the thinnest. Looking for something to improve smoother shifting in addition to not voiding my warranty if anything should happen down the road. Any feedback would be great! Thanks!
Hope this Helps
Jimbo
Safety Car
Joined: Jul 2004
Posts: 3,904
Likes: 29
From: Vancouver Washington
Have any of you tried changing your tranny fluid with Mobil 1 syntec? I assume the weight should be 5w-30 since it's the thinnest. Looking for something to improve smoother shifting in addition to not voiding my warranty if anything should happen down the road. Any feedback would be great! Thanks!
Instructor
Joined: Aug 2006
Posts: 125
Likes: 0
From: NEWPORT NEWS VA
How often do you change the trans fluid?And rear diff as well?
Burning Brakes
Joined: Feb 2006
Posts: 1,205
Likes: 5
From: Jupiter FL
Depends how much you drive your car and what you are doing with it. If you are just doing street driving and not getting on it really hard, just follow the service intervals in the owner's manual and you'll be fine. However, if you are doing track days, drag racing, or otherwise beating the car really hard, then you should be changing the fluids at least once a season, depending on how hard you are on the car and how many events you are doing. The more you drive the car hard, the more often you should change them. If you use the car hard for track days and the like, good rule of thumb is to start the season with all fresh fluids and then see how much you use it and how hard you are going.
Engine oil should be changed more often. Some guys do it after every track events, or 3 to 5 track days. You can go a lot longer with the tranny and diff though, IMHO. Brakes should be bled before each event also.
Engine oil should be changed more often. Some guys do it after every track events, or 3 to 5 track days. You can go a lot longer with the tranny and diff though, IMHO. Brakes should be bled before each event also.
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Brett Foote
Le Mans Master
Joined: Dec 2001
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From: Winchester TN
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St. Jude Donor '03-'04-'05-'06-'07-'11
Hi z06sense -
Be sure and read the owners manual -
The car calls for Dexron III ATF in the manual trans.
I used Red Line for my car.
I find that the trans fluid looks pretty dirty on the cars I have changed out - I am guessing it is the carbon synchronizers that make the fluid so dark, but Rodney from RPM or someone who really knows might be able to say for sure.
Here are some pics the might help -
http://www.iammoon.com/images/c5tech/transoil/
best regards -
mqqn
Be sure and read the owners manual -
The car calls for Dexron III ATF in the manual trans.
I used Red Line for my car.
I find that the trans fluid looks pretty dirty on the cars I have changed out - I am guessing it is the carbon synchronizers that make the fluid so dark, but Rodney from RPM or someone who really knows might be able to say for sure.
Here are some pics the might help -
http://www.iammoon.com/images/c5tech/transoil/
best regards -
mqqn
Safety Car
Joined: Mar 2003
Posts: 4,525
Likes: 372
From: Philadelphia PA
It almost seems that the plugs for the fill and drain have an orange type tape on the threads. Is that similar to the tape you wrap around threads while doing plumbing? Do you need to retape when you put the plugs back in?
Thanks...
Thanks...
Le Mans Master
Joined: Dec 2001
Posts: 7,788
Likes: 6
From: Winchester TN
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Cruise-In IV Veteran
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St. Jude Donor '03-'04-'05-'06-'07-'11
You could use teflon tape to seal it I suppose, but I have not had any problems just replacing the plugs as is -
best regards-
mqqn
Premium Supporting Vendor
Joined: Aug 2001
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From: King George VA
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Racer
Joined: Aug 2004
Posts: 421
Likes: 5
From: Nashville, TN
I use Mobil 1 synthetic ATF in my Z06 with no problems. It is a direct replacement for Dexron III ATF which is what is in the MN12 from the factory. Best thing about it is it's available just about everywhere, and is competitively priced, and yes, it will smooth out shifting.
Hope this Helps
Jimbo
Hope this Helps
Jimbo
Melting Slicks
Joined: Apr 2000
Posts: 2,920
Likes: 2
From: North Bend WA
I'm a longtime fan of Royal Purple Synchromax, but used to have to use it due to a specialized application. Since I swear by Amsoil for engine oil, it sounds like I have some decisions ahead of me! 
Racer
Joined: Dec 2006
Posts: 4,434
Likes: 18
From: Braselton GA
Haven't got the Z out to a track day yet (only had it a month) but the previous car i tracked was a ~300 hp FWD car with a torque biasing diff (Quaife) in the transaxle, I ran Mobil 1 synth. The Q. ATB diffs generate a ton of heat (always pegging my 270 degree gauge) and the Mobil 1 always held up well. Some of the redline/Amsoil ones are good, but Mobil 1 can be gotten at any Autozone for $4.99/qt.