# What tranny fluid do you guys use? **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [January 10, 2008, 7:24pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604 "2008-01-10T19:24:21Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![nappy1380](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nappy1380/32/7502_2.png) [@nappy1380](https://forums.speedlife.net/u/nappy1380)\ **Post date:** [January 10, 2008, 7:24pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/1 "2008-01-10T19:24:21Z")
I read this [http://nyspeed.com/forums/showthread.php?t=40655](http://nyspeed.com/forums/showthread.php?t=40655) and answered my questions about rear diff lube (AMSOil ftw) but couldn’t find any posts about what kind of tranny fluid to use. What do you guys use? ---
**Author:** ![Jim1234664](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jim1234664/32/7438_2.png) [@Jim1234664](https://forums.speedlife.net/u/Jim1234664)\ **Post date:** [January 10, 2008, 7:30pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/2 "2008-01-10T19:30:50Z")
I use redline mt-90 but im not entirely satisfied I should probly try something else just to compare ---
**Author:** ![Muscle50](https://avatars.discourse-cdn.com/v4/letter/m/bcef8e/32.png) [@Muscle50](https://forums.speedlife.net/u/Muscle50)\ **Post date:** [January 10, 2008, 8:14pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/3 "2008-01-10T20:14:52Z")
> [@nappy1380"](#): > > I read this > > [http://nyspeed.com/forums/showthread.php?t=40655](http://nyspeed.com/forums/showthread.php?t=40655) > > and answered my questions about rear diff lube (AMSOil ftw) but couldn’t find any posts about what kind of tranny fluid to use. What do you guys use? I guess it depends on what kind of transmission you have? ---
**Author:** ![Rx3](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rx3/32/7194_2.png) [@Rx3](https://forums.speedlife.net/u/Rx3)\ **Post date:** [January 10, 2008, 8:20pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/4 "2008-01-10T20:20:59Z")
Redline Heavyweight Shockproof gear Oil. ---
**Author:** ![ieatpaint](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ieatpaint/32/7311_2.png) [@ieatpaint](https://forums.speedlife.net/u/ieatpaint)\ **Post date:** [January 10, 2008, 8:21pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/5 "2008-01-10T20:21:58Z")
factory honda mtf ---
**Author:** ![squid](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/squid/32/4984_2.png) [@squid](https://forums.speedlife.net/u/squid)\ **Post date:** [January 10, 2008, 8:26pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/6 "2008-01-10T20:26:58Z")
NEO 75/90RHD & 75/90HD I’ve used Redline MT90 and Royal Purple 75/90HD and NEO beats them all hands down. ---
**Author:** ![Violator](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/violator/32/7278_2.png) [@Violator](https://forums.speedlife.net/u/Violator)\ **Post date:** [January 10, 2008, 8:46pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/7 "2008-01-10T20:46:07Z")
T45 Use Dextron 5 ATF That transmission wont hold much over 350 without being built and you are better dropping in a T56 later down the line anyway. For now you primary concern is the shifter. That will be the first thingto cause problems down the line. Buy a Pro 5.0 ---
**Author:** ![Geoff](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/geoff/32/6104_2.png) [@Geoff](https://forums.speedlife.net/u/Geoff)\ **Post date:** [January 10, 2008, 8:51pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/8 "2008-01-10T20:51:03Z")
MR diaqueen in the transmission, and redline heavyweight shockproof in the transfer case and diff (with the redline lsd anti-friction additive) ---
**Author:** ![nappy1380](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nappy1380/32/7502_2.png) [@nappy1380](https://forums.speedlife.net/u/nappy1380)\ **Post date:** [January 10, 2008, 9:05pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/9 "2008-01-10T21:05:46Z")
> [@Violator](#): > > T45 Use Dextron 5 ATF > > That transmission wont hold much over 350 without being built and you are better dropping in a T56 later down the line anyway. > > For now you primary concern is the shifter. That will be the first thingto cause problems down the line. Buy a Pro 5.0 Bought the 5.0 last week and it is on it’s way right now. ---
**Author:** ![Carnut](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/carnut/32/7590_2.png) [@Carnut](https://forums.speedlife.net/u/Carnut)\ **Post date:** [January 10, 2008, 9:18pm UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/10 "2008-01-10T21:18:06Z")
it depends on what kind of transmission it is. ---
**Author:** ![avs](https://avatars.discourse-cdn.com/v4/letter/a/f475e1/32.png) [@avs](https://forums.speedlife.net/u/avs)\ **Post date:** [January 11, 2008, 4:17am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/11 "2008-01-11T04:17:00Z")
> [@Geoff](#): > > MR diaqueen in the transmission, and redline heavyweight shockproof in the transfer case and diff (with the redline lsd anti-friction additive) Aren’t you suppose to used diaqueen on the diff? ---
**Author:** ![avs](https://avatars.discourse-cdn.com/v4/letter/a/f475e1/32.png) [@avs](https://forums.speedlife.net/u/avs)\ **Post date:** [January 11, 2008, 4:22am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/12 "2008-01-11T04:22:46Z")
> [@Muscle50](#): > > I guess it depends on what kind of transmission you have? True. You have to do some research. Currently I am using Diaqueen on the diff and transfercase. 2 Qt of Redline MTL and 1 QT of MT-90 on the tranny. To be honest, I can’t really tell the difference. Some tranny are really sensitive with the viscosity of oil you put in there. For instance if you used a heavier viscosity oil on the evo, it will have problem shifting when the oil is cold. Is the car a daily driver? a summer car? ---
**Author:** ![nappy1380](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nappy1380/32/7502_2.png) [@nappy1380](https://forums.speedlife.net/u/nappy1380)\ **Post date:** [January 11, 2008, 4:36am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/13 "2008-01-11T04:36:07Z")
It is a T45. ---
**Author:** ![ultradriver10000](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ultradriver10000/32/7397_2.png) [@ultradriver10000](https://forums.speedlife.net/u/ultradriver10000)\ **Post date:** [January 11, 2008, 7:04am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/14 "2008-01-11T07:04:05Z")
Mustang GT… When you want to work on that thing ? ---
**Author:** ![1BADGPGT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/1badgpgt/32/5123_2.png) [@1BADGPGT](https://forums.speedlife.net/u/1BADGPGT)\ **Post date:** [January 11, 2008, 7:14am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/15 "2008-01-11T07:14:15Z")
I use Dexron VI in my trans. ---
**Author:** ![Studderin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/studderin/32/7197_2.png) [@Studderin](https://forums.speedlife.net/u/Studderin)\ **Post date:** [January 11, 2008, 8:05am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/16 "2008-01-11T08:05:26Z")
> [@Carnut](#): > > it depends on what kind of transmission it is. +1 nappy are you asking what others use? you for your car??? ---
**Author:** ![ZOMGVTEK](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/zomgvtek/32/5063_2.png) [@ZOMGVTEK](https://forums.speedlife.net/u/ZOMGVTEK)\ **Post date:** [January 11, 2008, 9:07am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/17 "2008-01-11T09:07:10Z")
Honda ATF ---
**Author:** ![BrockwayMT](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/brockwaymt/32/5060_2.png) [@BrockwayMT](https://forums.speedlife.net/u/BrockwayMT)\ **Post date:** [January 11, 2008, 9:40am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/18 "2008-01-11T09:40:46Z")
> [@1BADGPGT](#): > > I use Dexron VI in my trans. I wouldn’t use Dexron VI in anything other than a 06+ GM that came with it from the factory. Dex VI is harder on seals than Dex III and may cause leakage in older vehicles. GM wants to make it universal for service but I wouldn’t recommend it. It is also pricey as whoever makes it needs to be licensed from the developers of Dex VI (GM/Afton Chemical/PetroCanada). At work we buy direct from PetroCanada for factory fill. I can’t remember what a barrel costs but it isn’t cheap. ---
**Author:** ![Justin](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justin/32/7459_2.png) [@Justin](https://forums.speedlife.net/u/Justin)\ **Post date:** [January 11, 2008, 10:42am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/19 "2008-01-11T10:42:22Z")
GM Syncromesh. ---
**Author:** ![Muscle50](https://avatars.discourse-cdn.com/v4/letter/m/bcef8e/32.png) [@Muscle50](https://forums.speedlife.net/u/Muscle50)\ **Post date:** [January 11, 2008, 10:44am UTC](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604/20 "2008-01-11T10:44:52Z")
> [@nappy1380](#): > > It is a T45. Factory fill is Dex/Merc III, however for high horsepower applications I recommend half Dex/Merc & half Dodge Viper MTL or Syngear II [Next page](https://forums.speedlife.net/t/what-tranny-fluid-do-you-guys-use/41604.md?page=2)