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Old 12-15-2012, 09:23 AM
Tyannt Tyannt is offline
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Location: Abroad!
Join Date: Jan 2006
Posts: 109
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Mein Auto: 95 540/6 Alusil
Just to add to AMK's problem, I had a 91 525 M50 doing the same thing.

Same symptoms, AND overheating, froth under the oil cap and white smoke bellowing.
No oil contamination nor coolant contamination and 3 NON BMW mechanics telling me i
had a bad head gasket.

PITA for near 2 mos so I hardly used the car...
I called a buddy over. European car mechanic. Bled my system with the heater controls
on MAX DEFROST for reasons I can't fully explain and within an hour no more problems.
He told me when there's air in the system that HOT SPOTS can develop; areas where air
gets trapped and can burn off coolant, cause coolant loss and overheating.

His first and last advice... These cars are notorious for air in the cooling systems!
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