Quote:
Originally Posted by TheRuss
Thanks Dackel.
Why do you want to stick to the D4 then if Redline are recommending D6 and D6 closer matches the BMW fluid?
|
Well... I know that D4 works well in my car. And I know how I drive over here on the autobahn. Its normal for me to be in 6th gear 80 kph and go WOT all the way up to 290 kph (YES a real 290 kph!), without shifting. Don't get me wrong I do use the gears, but a lot of time your just in gear and you GO!!
I think its better to have a slightly thicker trans fluid than a thinner one(like the D6) in those situations. I think for US style driving this is a moot point. I really would not worry about using D4 over D6 unless you track your car or you park outside in the winter months. I have a garage here in DE.
Quote:
I've put a thread on BITOG already, and am being advised to use a different fluid again.
I think I'm more confused now than when I started! 
|
You know with oil types... its almost like a religion to some guys. You can ask one question and get conflicting answers and everyone will tell you THEY are correct. You basically have to switch on your BS filter and go with your gut.
I decided to run Redline ATF-D4 bc I had experience with using it in some older BMW's where MTF-LT-1 and LT-2 was spec'd. So I felt safe using D4 in my 135i.
So... IF your car is an N54 I would say run the Redline ATF-D4. IF you have an N55 I would buy the Pentosin MTF-LT-5 that the 1M uses.
CORRECT 1M Fluids List [Engine, Transmission, Differential
http://www.1addicts.com/forums/showthread.php?t=620282
I ran into a similar problem while researching which ATF fluid to use in my e39 535iA last year. The trans was slipping and acting up. I wanted to change the ATF pan filter and do a fluid change. I ran into so many threads saying NO don't change it IF you have high miles. Your trans will fail shirtly after changing it. Some said change it NOW. Then when trying to source the proper ATF fluid... THAT was a pain. So many choices and conflicting info. In the end I went with my gut and use Liqi Molly which met the ZF trans specs of "Esso LT 71141". When I found some Exxon/Mobil synthetic ATF over here that had this oil specs... I found out that quite a few e39 guys used that oil only to find out it really did not meet BMW & ZF's specs!! I was so confused.
In the end I was either gonna spend $500 on 20L of ZF Lifeguard fluid from an official ZF dealer over here... or Buy some Liqi-Molly ATF(that also met this Esso LT spec) for $150. I ended up going with my gut and used the Liqi Molly ATF fluid. So far 40K kms and no problems with my e39. It even fixed all the trans slippage and jerky shifts. I was so happy!
Good Luck what ever fluid you use.
Dackel