A well known racecar shop that I know quite well ( I will not mention any name here) had two of its customer car's oil filter blow during BMW Club Races this summer. Both were Mahle oil filters. What happened was that the rubber ring blew big time, letting a few quarts of oil on the track ( with desastrous results when it happens mid-pack at the start of a race, in a corner in one occasion). Is there a pattern here? Are the Mann or thebig FRAM filters better?