POPULAR TOPIC THIS TIME OF YEAR Help - Oil Separator

[jst2878]

Im telling you again my friend. The northeast and everywhere with freezing temperatures is susceptable to this oil seperator pandemic. Poor engineering has led many to change to a newer designed seperator(if they even make one), or the need to install electric heaters for them. Ive taken my X5 off the road from november to april for this exact problem.

Originally Posted by Weasel

Maybe the crankcase vent valve froze up and pressurized the crankcase, forcing oil to squirt out of the valve cover gasket. I remember seeing threads on that last winter...

[dragoncoach]

Originally Posted by jst2878

Im telling you again my friend. The northeast and everywhere with freezing temperatures is susceptable to this oil seperator pandemic. Poor engineering has led many to change to a newer designed seperator(if they even make one), or the need to install electric heaters for them. Ive taken my X5 off the road from november to april for this exact problem.

Wow! An SAV you can't drive in the winter or during really cold weather! Sounds really crazy but I can see your reasoning.

[Weasel]

Has anyone had any luck insulating the valve, I would think some properly used foam pipe insulation from homedepot would work for some of you.

[m5james]

I have some foam insulation tubing and aluminum tape...I'll give it a try when I do my intake manifold swap.

[m5james]

Originally Posted by FAT_X5

Anyone think it could be the oil pump? My shop can't look at it until Monday. He thinks that the hissing noise came from bad pump.

I had the breathing tubes, water pump, T stat all replaced last year.

I HIGHLY doubt its the oil pump. I know in the late 90 540/740 motors there were instances where the oilpump bolts came loose and would cause a rattle. Removing the oil pan in the X5 is a bitch in itself, and an expensive guess if you mechanic is wrong. I'd start simply w/ the OSV and all the lines running to it before you let him turn your wallet and X5 into an expensive project on your dime.