Originally Posted by Dackelone
Also interesting is how almost every 1M over has reported when they have changed their trans fluid at 2K miles... the shifter shifted MUCH smoother with the MTF-LT-5. There was some confusion when the 1M came out whether to change the trans fluid or not. Most techs drained the trans fluid only to find out BMW NA did not stock the MTF-LT-5 fluid. So first they did change it, then BMW NA put out a TSB saying NOT to change it at the first 2K mile service. BMW says to change the fluid at 45K miles or the third oil change. But most 1M owners have changed their trans fluid along with the engine oil and diff fluid at 2K mile - first service. IF it works on a 1M it will work on the AG cars as well.
Thanks for the feedback on Red Line for our E8x and E9x manual transmissions. But I'm confused by the second paragraph. Does that mean that the 1M does not come with MTF-LT-5 as factory fill?
From BMW Canada SI B00 01 10 June 2011 (refers to 1 Series M Coupe):
The manual transmission fluid does not need to be changed at the 1,200 Mile Service (CBS service counter number 1).
Manual transmission fluid replacement is required and connected to other specific engine oil services. For example, manual transmission fluid replacement is required when performing the "CBS service counter number 3 and 6" engine oil changes. The chart below now references these changes.
The chart shows:
Vehicle Check 3:
Engine Oil, Differential Oil, MTF-LT-5 (1L 83 22 2 156 969) and Vehicle Check
Again at 122,000 km (except for Vehicle Check)
It also calls for spark plug replacement at 50,000 km (75,000 km for 335is/Z435is)
Once again, this puts the lie to the "lifetime fill" for the transmission, since the 1M transmission is not significantly different. It also puts the lie to 100,000 km for spark plugs.
It's almost like they do more maintenance on the special edition models because they they think the drivers of those cars are more likely to notice...