Originally Posted by Efthreeoh
Sammk, here's the valve train at 100,000. No sludge back then, and no sludge now.
And this is a pic of my Wife's Z3 valve train in April 2012 when I did the gasket. The Z3 has BMW OCI's around 10,000 miles and he car sits quite a bit and gets driven once or twice a week at about 40 miles a trip.
Thanks! Both motors look great from the top (though the E9x is hard to tell)..