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      02-27-2019, 12:49 AM   #27
72dan
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Drives: 2009 M3 DCT coupe white/beige
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head gasket

Quote:
Originally Posted by M3Post View Post
Head gasket = Oil in the coolant. Could also have someone drive behind you and check for white smoke from the exhaust on over run (closed throttle) after WOT.

PS:
Though the rod bearings might not like that. Go easy on it..
I would say head gasket too. All the oil and water passageways mate on the surface of the head and block. When a car overheats enough and the heads warp you get cross contamination. At the worst I have seen it the other way antifreeze in the oil and if driven longer enough the motor is junk. When the antifreeze goes to oil it looks like a milkshake.
The worst is when the antifreeze leaks into a cylinder and then it hydraulics. That is you can't compress water so the side of the piston breaks off.
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