In Reply to: Re: Engine Oil Low posted by Brian on April 04, 2001 at 18:44:32:
I take it that you are not blowing smoke everywhere so you don't have a broken ring. What you do most probably have is worn rings that are allowing oil to leak past at a higher rate than when the engine was new. Result - car burns oil. Very normal for any car with high mileage. This will not be a cheap fix. Requires the heads being pulled and new rings (usually 2-3) put on each piston. Would also recommend cleaning your valves as burnt oil carbonizes more readily on your valves than residual gas. Best thing to do until you have the money is keep adding oil.
...says my board computer sometimes. IŽll have a shop look at it. I suspect a small leak somewhere. But was wondering if somnebody might have experienced this before (91 750iL).
No chocolate-oil symptoms...No darking of coolant. So the oil just seems to leak out into nothing. I havenŽt seen a drop of oil on my garage floor either. Mysterious little thingy. But hereŽs the background.
Bought the car right after Inspection II where a BMW dealer had changed all oils and filters. Oil was clear and nice. About halfways up the stick between min/max. Milage: 187000 km (divide by 1.6 for miles).
After a medium hard drive at higher speeds (100-120mph) for an hour I stoped to refuel. Then the Engine Oil Low warning came on. Waited 10 minutes to let the oil settle and checked. Just on minimum mark. Refilled about a liter of oil... This was at about 187500 km.
Took it a bit easier just in case and the warning didnŽt show until about 189000 km after I had done several kickdowns and fast drive bys. Hey, a V12 can be fun ;) Same thing. Refilled about a liter.
Now today it again showed after I did a series of accelerations. This is at about 191000km...
It seems that if I rev the engine for a longer period or drive "hard" it looses oil. Or it could just be a coincident, and that it looses oil at a slow rate.
Any ideas what it is? Like I said, IŽll have a shop look at it soon to correct it anyways.