Residual oil in coolant after head gasket replacement

[mnewell969]

i have residual oil in my coolant tank after my mechanic replaced head gaskets, oil cooler, and egr cooler. He spent some time flushing the coolant system but we still have some oil. I added an aftermarket coolant filter system. Is that enough or am I asking for problems with my new oil cooler?

[Term3]

I'd run with the filter in place for a while then cut the canister open to see if it is picking up and holding the oil as I'm thinking the paper media would have a higher affinity for the oil. If it is holding the oil keep changing filters and checking to see if the residual oil is going away. I would also do a pressure check of your cooling system to see if it will hold pressure.

[mnewell969]

Okay, i have ordered 2 more filters. So in a couple of weeks I'll replace it. Just don't want clog the new oil cooler.$$

[PGreenSVT]

Dude if you had oil in the coolant he should have replace your hoses and maybe your heater core. At the very least it should have been flushed good with Greased Lightning, Simple Green, Dawn, or something of the like to clean the oil out of the cooling system. The degass bottle should have been removed and cleaned.

I don't think much of your mechanic's work. Flush it yourself. Drain a the coolant out. Add a gallon of Greased Lightning and fill with water. Run it with the heater on high for at least 1 hr. Then drain and flush with 24 gallons of distilled water. Add 3.5 gallons of fresh ELC concentrate and top off with distilled water.

[mnewell969]

PGreenSVT, Thanks for the feedback. So will this residual oil be a problem for my oil cooler?

[Term3]

Oil tends to turn into sticky snot in cooling systems.