In that situation, and only then, I'd give the sanding a shot before replacing the radiator...but it's the first I've heard of that issue here...and I read a lot here. But, that said, my concern was whether he had the decent skill. If you're sanding plastic to then have a pressure seal from o-ring, you'd need to be very careful and finish with a very fine sandpaper.
Upcoming comedy shows: May 20, Greenwich Village Comedy Club. 6 p.m. See Facebook for other shows and PM me if you can make one...love to see you there!
A recent set: https://youtu.be/995gLmVEVZk
Mangofy your E46!
Last edited by dmax; 01-09-2013 at 09:22 PM.