Oil Contamination in Coolant Reservoir A Comprehensive Guide

The ONLY place I'm finding oil is IN the antifreeze coolant reservoir. Just to clarify: 1. There is NO power loss at all. The car feels and performs great. Only way to tell at this point is to perform a compression and leak-down test to see if it really is the head gasket or something else. Fresh ... You should be able to see the colour of your antifreeze in the reservoir tank when you remove the radiator or coolant reservoir lid. Oil remnants will be seen ... Usually the "O" rings in the engine oil cooler are leaking internally. Easy to repair in an afternoon. Rob. Quote. ... oil is getting in your coolant overflow tank. Oil coolers and transmission coolers are very comment causes of oil in the coolant so you want ... GL 450 2007. It's still drivable. I just got an alert yesterday that coolant is low. Is this an expensive fix ? The coolant in a 5.3L Vortec does not communicate in any way with the intake manifold so a blown intake manifold gasket can not get oil into the coolant. Blown head gasket\cracked head if you're not getting a CEL with a miss. Oil and coolant only combine into that nice brown goo under high ... If there's oil in the coolant reservoir it could be a head gasket. If you open the radiator cap with the engine cold is there oil present under it? Oil filter housing gasket is common failure point and can cause this - coolant runs through there. You should also change your oil when you do the gasket as ...