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In Reply to: Synthetic? posted by David on May 19, 2002 at 06:55:24:
You're recommending synthetic oil? How come the owner's manual says, 'For M5, no reduced friction lubricants are permitted.' Kind of dictatorial, but still... This statement was right under the motor oil section.
David
Good synthetic oil is BETTER than dino oil in all categories. It flows better when cold, adheres to metal better, has a better additives package, and is more stable at extreme high and low temperatures.
FWIW--I use Mobil 1 10W30 in my M5 and my S14 M3. Thicker oil does not necessarily lubricate better than thinner oil. If I spin a bearing, then I'll switch to 15W50.
Everyone should read the Motor Oil Bible. Search for it on google.com or other search engine. It costs about $5, I think, but it's well worth it to dispell many myths and mis-conceptions about oil.
JamesM