In Reply to: Another sulfer question posted by Greg on March 27, 1999 at 00:33:29:
The wear takes place at the very top of the bore - I doubt that it would change the oil consumption - never seen any suggestion that it does.
My 530 has 132,000 miles so I know what your feeling. Mine drives really well, and has used barely any discernable oil in the last 2k miles - not enough to be worth topping it up. The idle is not as good as my straight six BMW was, I can sense the firing pulses but, after all, it does put out 73 hp per litre! Not exactly wild cams but not a shopping trolly either.
I did see a suggestion (originalting with a dealer)that the problem could lead to relatively fast oil deterioration due to blow-by gases contaminating the oil. I personally believe this is rubbish - the problem would need to be far worse to have this effect.
: Do the engines with sulfer damage burn/use oil? It seems that if the cylinder walls are harmed to the point that the engine doesn't have enough compression to start that it would burn oil. My 540i doesn't use any oil so I'm looking for a little peace of mind. I put Amsoil 20/50 in 7,000 miles ago and I've used only 1/4 quart. The car also has 114,000 miles so warranty repairs are out of the question.