[saws]

Hi all,

There was a side discussion on one of the threads about this and I thought it deserved its own thread :-)

While I personally always followed some guidelines to break in my new vehicles, I always thought it was a thing of the past just like waiting for car to heat up before start driving etc., but BMW has official recommendations:
https://www.bmw.com/en/automotive-li...a-new-car.html

How do you plan to break in your new X1

[McTricky]

Piston rings go through a period in which they seat in the piston and seal to the cylinder wall. I think that's the thinking behind varying RPM's and cylinder pressures vs. constant cruising at highway speed for extended periods.