: Milky oil cap and down in pour pipe but dip stick looks good?



CadillacManny
03-09-13, 01:21 AM
Cold winter mornings maybe?
Blown head gasket?
No):

MoistCabbage
03-09-13, 02:38 AM
A milky cap can be caused by condensation in the crankcase. Take many short (less than 20 minute) trips?

CadillacManny
03-09-13, 05:54 PM
Found problem. No rubber seal around oil cap

MoistCabbage
03-09-13, 07:39 PM
That won't cause a milky cap, but it's a vacuum leak.

CadillacManny
03-09-13, 10:36 PM
Def condensation

elvin315
03-10-13, 03:28 AM
Winter condensation.

Submariner409
03-10-13, 12:15 PM
........... or a non-functional PCV system - which is designed to prevent just that sort of moisture buildup.

elvin315
03-14-13, 02:14 AM
Don't mistake our suggestions as expertise. The mayo could be what we say but again it could be a leaking oil cooler which is catastrophic if ignored. If it were a blown head gasket there'd be overheating and loss of coolant. Mechanics unfamiliar with the L81 engine are quick to blame the head gasket. While it does happen it isn't very common. Just keep the coolant level right and you shouldn't have to worry. Still some kind of compression test couldn't hurt.

MoistCabbage
03-14-13, 04:04 AM
IF an HG issue was suspected, I'd recommend a block test over a compression test. Quicker, easier, and more accurate.