Oil Contamination in Coolant A Step-by-Step Troubleshooting Guide

E60 Discussion - Oil in coolant reservoir - So after taking my BMW to a local INDY he replaced the oil cooler and oil filter housing did 3 ... 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 / ... The black gunk in your overflow reservoir looks kinda like misshapen globs like what you see in a lava lamp, it may be engine oil. I have a 09 Beetle, my mechanic called me with my issue and it was a failed oil cooler. I had oil in the coolant and the car overheated. Any chance you topped off your coolant reservoir recently with a funnel you also use for oil? If you take your rig to a shop for service, did ... There's evidence of oil residue in the coolant overflow tank in my 2012 Outback 3.6R. It has 150K miles, and has been dealer maintained. The only good news is that oil in the coolant is better than coolant in the oil... Expensive fix, but probably worth doing. Any car can have a head gasket fail. In this video I go over what engine oil may look like if coolant has gotten into it and I also go over a few possibilities of how coolant ... Usually the "O" rings in the engine oil cooler are leaking internally. Easy to repair in an afternoon. Rob. Quote. Oil in coolant is a leaking oil cooler. Coolant in the oil can be many many things, with the head gasket being low on the list. Coolant in the cylinder is a ...