Oil in Coolant Causes, Effects, and Essential Fixes

I have an L322 HSE 2008 4.4 V8 i found oil in the coolant reservoir. I've changed the oil coolers and hoses and it happens again 6 months later. The oil cooler is the most likely cause, like most engines, it's combined with the oil filter housing. If your repairer doesn't know this and / ... However, pouring oil into an empty coolant reservoir is not advisable and should only be considered an absolute last resort in extreme ... Clean the coolant tank out with brake clean or engine degreaser, then follow up with dish detergent (that will remove all the oil residue). Let ... If you have oil in your reservoir you have a blown head gasket my friend. You can see it better in the reservoir then you can in the radiator. The is no oil going through the egr system, if there is oil in the coolant its most likely a failed oil cooler. Engine oil in coolant! ... Yikes. Not a common issue. My suspicion would be head gasket. Did you buy this car from a dealer? ... That's bad! They put a special cap on your cooling system and pressurize it, then monitor it for a period of time. if the pressure drops you have a leak somewhere. basically what the TSB says is that "there was an internal casting issue with the block at the cylider walls that would allow the oil and ... Yes, oil can leak into the cooling system but that does not mean coolant will necessarily simultaneously leak into the oil. For example, if you ...