The complete automotive resource for buyers, sellers, and owners like you.
Car, Truck and SUV Forums at Roadfly
+ Bentley Forums
+ BMW Forums
+ Cadillac Forums
+ Chevrolet Forums
+ Ferrari Forums
+ Jaguar Forums
+ Lamborghini Forums
+ Lotus Forums
+ Mercedes-Benz Forums
+ Maserati Forums
+ MINI Forums
+ Porsche Forums
+ General Discussion
+ Marketplace Forums
Re: M3 oil consumption (archive)

[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]

Posted by Al on September 29, 2000 at 22:48:36:

In Reply to: Re: M3 oil consumption posted by Bammer on September 29, 2000 at 19:21:05:

One of my M3's was burning a quart per 1200-1400 miles when I purchased the car with 95K on it . The car developed an exhaust leak by 110K mi. resulting in removal of the head to remove a broken tap that was in the head where an exhaust stud should have been.(previous owner's hack mechanic probably didn't even tell him about it!). I disassembled the head and electrically drilled the tap out saving all of the threads! (awesome process by the way) When I reassembled the head, I replaced the hardened valve seals. The car now has 150K on it and burns 1/2 a quart at 3,000 miles. I bounce it off redline daily!
The E30 M3 is gonna burn oil.

The S14 has an aluminum cylinder block with forged aluminum pistons. When the engine is cold, the clearances between the pistons and cylinder walls are larger than your basic iron-block motor. As the engine warms up, these clearances close up, but as it's warming up, it's probably burning a little oil.

WARMING UP THE MOTOR IS VERY IMPORTANT. The owners manual states that engine revs should not exceed 4000 rpm until the oil temp is at least 125 degrees. My warm-up ritual took about 5 miles, and about as many minutes, never exceeding 2500, from the time I started the car. As long as the thing was warmed up properly, my oil consumption was about 1 qt every 3000 miles --- about every oil change. I didn't have any dirt or oil around the tail-pipe. And absolutely no smoke. My wife never got the routine right: whenever she drove the car, I'd check the oil the next day; added a half quart every time.

(After the car was warmed up, I usually ran it between 2500 and 4000, with frequent bursts above 6000; I probably hit the limiter at least once a day, sometimes more. Apart from a tensioner, the only major repair I had on the car in 5 years was the rear brakes . . . after 85k miles.)

I used Valvoline 20w/50 racing oil; with 15w/50 Mobile 1, oil consumption almost doubled.

When I first got the car, the oil consumption really surprised me. My mechanic said factory oil consumption figures allowed up to a quart per 750 miles, so I should relax.

Anyway, I hope this helps. Good luck.

Follow Ups:

[ Follow Ups ] [ E30 M3 Message Board ] [ Msg. Board FAQ ]
Questions, comments, or problems, please visit the Roadfly help desk. Logo © 1997 - 2018 Jump Internet Inc. All rights reserved.