Hi folks, a little advice/ opinion would be appreciated.
B4 GC (G26) now pretty much run in and I am considering engine oil and LS Diff oil change.
Both of these were normal practice on previously owned BMW M cars ( and AMG) but seem not to be recommended for Alpina?
I want to do the best by the car but not waste money or invalidate any warranties
Has this been discussed before at all?
Thanks
TT