[Kolyan2k]

Why do M cars require differential and tranny fluids changed at 1200 miles and none-M cars at the regular 30k miles? Especially when 1M and M235 have the same tranny as far as I know....

[MightyMouseTech]

Originally Posted by Kolyan2k

Why do M cars require differential and tranny fluids changed at 1200 miles and none-M cars at the regular 30k miles? Especially when 1M and M235 have the same tranny as far as I know....

Marketing.

[ctuna]

The theory was that if you did early oil changes any metal shavings
that were circulating from break in would be flushed and not cause further
wear . And most of the break in happens in the first 1000 miles. Some people would do this as a standard practice on any new car.
I think they are assuming that since this is a high performance car you may be hitting it harder.

[Kolyan2k]

Originally Posted by ctuna

The theory was that if you did early oil changes any metal shavings
that were circulating from break in would be flushed and not cause further
wear . And most of the break in happens in the first 1000 miles. Some people would do this as a standard practice on any new car.
I think they are assuming that since this is a high performance car you may be hitting it harder.

There is still breakin period

I am just curious if I need to get my shit flushed at 10k miles or follow BMW schedule