This document was prepared by Fishbone primarily for 1st gen cars that use the same transmission. I added information regarding the 2nd gen cars differences. It is discussed in the thread below.


https://www.northamericanmotoring.co...ml#post3502021

 

No no no. Don't it that way on the R56.

Use this method. The easy way.

 

I'm going try this way, but I don't see the point of turning on the car, shifting all the gears, and getting everything hot. For example, the density of ATF fluid at 100C (.814) vs 30C(.859) is only about 5% different. For 2 out of 5 L that about 3% off. Notice that the density is higher at the lower temperature, just like butter is thicker in the frig when compared to in the frying pan. I can't see a 3% excess of the max transmission fluid is not going to affect performance in any way.

 

Not sure if @rk15000 is still following this thread? So, I have done multiple searches YouTube/other Mini sites and I cannot find any video's on doing this automatic transmission flush on an F56S - LOTS of R56 and manual transmissions, but no autos?? My car is a 2015 F56-S with auto and 89K miles.

So, perhaps @Chazman or @Yupetc or @ECS Tuning could answer a couple of basic details questions I have? First is access to the fill plug (T55): is there a guide to get access to it? Just removal of the incoming air tube and the inlet pipe? If done with the car in a "cold" state, when I remove the T40 overflow drain plug as second step, I should expect little to no fluid when cold, correct? To remove the overflow tube, that means removing the 17mm plug that has the tube attached to it, correct? Going with this cold process, I should expect to get about 3 quarts of fluid out after I remove the 17mm plug with drain tube, right?, and then I should replace the same amount drained with new ATF-6 fluid. Am I missing anything here? Thanks in advance.

 

Does your 2015 have the same AISIN 6 speed auto?

 

I believe so as it is a 6-speed automatic, but do you have an easy way to positively confirm? Thanks.

 

Nope, but doesn't the F56S Forum contain this info?

I suppose if it looks like the same trans that's a start.

Cross reference the part # on the BMW parts website?...URL escapes me. I'd be stunned if it had the same part #.

 

Dang - I posted this in the wrong forum - it was supposed to be in the 3rd gen thread. I hope I can repost there without violating any rules.. Thanks Lex for the replies.

 

NO worries Brohemus. I just assumed that forum might be more helpful.

Good luck with the drain and fill. Use the correct fluid!