My 420sel was burning oil and I got on this forum and found out that it cost about $50 in parts and 2 1/2 hours labor instead of the 8 hrs. that the alldata website says. So instead of paying from$400-2000 that had been quoted me, I paid $280. I feel like a genius and I was surprised at the mechanics who were trying to rip me off. I got my mechanics respect and I fell like alot of car repair places are just sitting around waiting for uninformed people to come and get taken. Thank You Shopforum!