1st Gear Member
Join Date: Jan 2005
Location: Clemson, South Carolina
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you have to be burning oil, because 3 quarts a week is just ridiculos.
My car has 122k on it and sinc elast oil change at 120k i havent added a single drop of oil on it. so check that !! my guess is eaither the oil is being burned, or worst case here, you have a craked haed and so the oil goes into the cooling system, explains your overahting, the oil clogs the cooling system.
but i dont want to freak you out yet.
most important get the water pump replaced, they had plasctic impeller that failed, or when they are about to fail, they sometimes spin making the engine seem ok and sometimes stop spining making the engine over heat.
also the thermostat housing, is of plastic, it cracks, so coolant will leak.
so get the works, new water pump, new thermost and new aluminim thermostat housing, dont forget to use bmw original coolant, it look blue, and distilled water, it must be mixed on a 50/50 ratio.
and since replacing all that requires removal of fan, change fan clucth, it fails easily and so the fan doe snot cool enought.
altough a failed fan clucth should not make the car overheat, because there is a little electrical thremostat on the side of the radiator, is the car gets too hot, the elecrical fan has to kick in. so check the electrical fan as well, since this fan has to also work on low seed when the ac is on. an easy test to see if the motor spins is to turn the ac on, go the the front where the grill is an see if th efan turns. but even if its turning it does not indicates that the thermostat on the radiator is working, this thermostat is a cheap part, just replace it anyway and check the elecrical system that activates the fan, you know relays and all.
sounds complicated, but overheating is not good for you much less your engine..
and 3 quarts of oil a week. im sorry but your engine must be about to go to the grave.....yard
make sure your measuring the oil level when the car has been siting for a while on a flat surface. gas saion checks ar enot good because some 5 min is not enought time for the oil to fall from the cilinder head onto the bottom.
what i do think is that your valve cover is leaking and since the engine is tilted sideway the oil leaks on the exaust side, and whil eyour moving the oil drips on top of the exaust manifold and is burn away..
i your car misfiring, acking weird on iddle, spputers on take offss, you know feels weird.
If its doing that is because is misfiring, and that happend because the top valve cover seal fails and oil leaks onto the spark plug recess fills it up and so no contact or spark action.
sinc eyou say the engine is not making noises, or smoke on the exaust.. get the coolant and cooling system job, then check for oil inside the spark plugs..
cause 3 quarts of oil has to go somewhere!!!!
hopt this is helpfull let me know..
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