Still on my quest to find a better fluid than ATF+4 to use in a 6-speed manual transmission (Getrag). I am a bit concerned about the viscosity when the vehicle is used in hot temps, being a turbo application with almost 300 hp. I also have concerns about ATF+4 having the right friction for proper synchro operation that you might find in manual transmission lubes. Amsoil offers a synthetic ATF, and BMW has an ATF type of fluid for their manual transmissions. Does anyone think either of these fluids might be better than ATF+4, or recommend an other fluid type ?. Thanks for any replies.
Better replacement for ATF+4 In Manual Tranny?
- Thread starter JSRT4
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Would Amsoil ATF be considered an improvement over Chrysler ATF+4 ?, secondly is Valvoline Fully Synthetic ATF+4 (licensed by Chrysler) and different than Chrysler ATF+4 ?. Lotsa questions, sorry.
Originally Posted By: JSRT4
Would Amsoil ATF be considered an improvement over Chrysler ATF+4 ?
In a manual transmission, IMHO maybe not. The viscosity is a might low....it would be great in the winter though.
Would Amsoil ATF be considered an improvement over Chrysler ATF+4 ?
In a manual transmission, IMHO maybe not. The viscosity is a might low....it would be great in the winter though.
thanks for your honest opinion Pablo, much appreciated.
I've gone and swapped in some GM Synchromesh fluid, it does feel better and shifts better overall. The notchiness I had in 2nd gear as been smoothed over a bit, almost feels like it has cushioned the shifts. I decided to go with the GM Synchromesh as the viscosity increase isn't too large, as compared to something like Redline MTL, and it is a bit smaller of an increase than Amsoil's MTF (though I've always liked Amsoil's MTF in my other vehicles).
I really don't know how this will work in the long run in terms of synchro wear/protection. If anyone has an opinion on this fluid in a 6mt manual getrag transmission I'd love to hear it. thanks
Joey
I really don't know how this will work in the long run in terms of synchro wear/protection. If anyone has an opinion on this fluid in a 6mt manual getrag transmission I'd love to hear it. thanks
Joey
What would people recommend for a BMW 5-speed (2001 325CI) g'box and diff? Owners manual does not give fluid spec but I'm told it's ATF for g'box and possibly 75W90 for diff?
What kind of car are we talking about here. Mopar ATF+4 is a pretty good product.
Originally Posted By: sprintman
What would people recommend for a BMW 5-speed (2001 325CI) g'box and diff? Owners manual does not give fluid spec but I'm told it's ATF for g'box and possibly 75W90 for diff?
Which engine? M54-B25 or M56? Which transmission?
For the M54-B25 MT my look up table says:
Quote:
Manual Transmission,Yellow Label.....GLS[3]
3. Esso/Exxon MTF-LT-1, BMW Part No. 83 22 9 408 942 from
model year 2004 some manual transmissions are filled with
Castrol MTF-LT-2 which has the same properties as MTF-LT-1.
The MTF-LT-1 fluid may be mixed and or substituted for the
MTF-LT-2 manual transmission fluid, except SMG Transmission
in 2006 and later M5. 2006 and later Z4 M Coupe/Roadster
Require MTF-LT-2 fluid
Which diff?
Quote:
Standard Differential, Rear .....GLS[5]
Severe Gear 75W-90
Controlled Slip Differential, Rear .....GLS[6]
Severe Gear 75W-140
5. GLS is BMW Part No. 83 22 9 407 768 or Castrol SAF-XO.
6. GLS is BMW Part No. 83 22 1 470 080 or Castrol SAF-XJ.
What would people recommend for a BMW 5-speed (2001 325CI) g'box and diff? Owners manual does not give fluid spec but I'm told it's ATF for g'box and possibly 75W90 for diff?
Which engine? M54-B25 or M56? Which transmission?
For the M54-B25 MT my look up table says:
Quote:
Manual Transmission,Yellow Label.....GLS[3]
3. Esso/Exxon MTF-LT-1, BMW Part No. 83 22 9 408 942 from
model year 2004 some manual transmissions are filled with
Castrol MTF-LT-2 which has the same properties as MTF-LT-1.
The MTF-LT-1 fluid may be mixed and or substituted for the
MTF-LT-2 manual transmission fluid, except SMG Transmission
in 2006 and later M5. 2006 and later Z4 M Coupe/Roadster
Require MTF-LT-2 fluid
Which diff?
Quote:
Standard Differential, Rear .....GLS[5]
Severe Gear 75W-90
Controlled Slip Differential, Rear .....GLS[6]
Severe Gear 75W-140
5. GLS is BMW Part No. 83 22 9 407 768 or Castrol SAF-XO.
6. GLS is BMW Part No. 83 22 1 470 080 or Castrol SAF-XJ.
Originally Posted By: Johnny
What kind of car are we talking about here. Mopar ATF+4 is a pretty good product.
My car is a Caliber SRT4 - turbo 2.4L with 6-MT transmission. I agree that ATF+4 is a good auto transmission fluid, I just don't like the way it affects shifting in this manual transmission.
What kind of car are we talking about here. Mopar ATF+4 is a pretty good product.
My car is a Caliber SRT4 - turbo 2.4L with 6-MT transmission. I agree that ATF+4 is a good auto transmission fluid, I just don't like the way it affects shifting in this manual transmission.
The Royal Purple SycroMax fluid is a good fluid for manual transmissions that spec ATF. You'll find most guys on the BMW forums run it.
I switched to RP Synchromax in my 04 SRT4, but my trans is an NVG T850 with a Quaife LSD. It shifts much better in all conditions with the RP. The manual calls for ATF+4 and 4oz of Mopar friction modifier.
Originally Posted By: cosynthetics
The Royal Purple SycroMax fluid is a good fluid for manual transmissions that spec ATF. You'll find most guys on the BMW forums run it.
Thanks for the info, I might check it out after my first fluid change interval.
The Royal Purple SycroMax fluid is a good fluid for manual transmissions that spec ATF. You'll find most guys on the BMW forums run it.
Thanks for the info, I might check it out after my first fluid change interval.
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