I really need somebody that's well versed with the problems to (I hope to god) shed some light on the situation, and these forums seemed like a good place to start. This car is still new to me and I've been physically ill dealing with what might be looming doom. It may take a long time to get oil out of the coolant system once introduced. I've been wildly stressed out about this entire situation for two weeks. Do it when the motor is cold and not running. ![]() I'm nervous about replacing it and finding out it doesn't solve the problem, or blindly going into the repair and finding out it's a bigger task than I was ready for, or messing something up in the process.ĭoes anybody have any info on this? Part number is 17217628058. Is there something inside that which could fail and cause this? It looks relatively easy to replace, but I don't know enough about these engines yet to know if that's true, or if I'm missing vital info about it (much like priming when doing the gasket) that could lead to me messing something up. On a lot of modern cars, there is an oil cooler installed on your car, which is. Unfortunately, the most common problem causing oil in your coolant reservoir is a bad or leaking. I haven't found much info about it online, or any diy's about replacing it. 6 Causes of Engine Oil In The Coolant Reservoir 1. My car looks like it has an oil cooler (much like I've seen on the housings of the 4cyl models) tucked directly underneath the coolant tank. My problem is, if it's not the fabled ofhg, and compression is fine, then where? It's very apparent oil is still getting in somewhere. I expected for there to be residual, and planned to do a few flushes over the next couple months, but what I found today was more than just residual. Kept an eye on temps in the hidden menu, nothing out of whack.īut there's still oil in the cooling system. Solution 1: In case you opened the reservoir or radiator top and find out that the coolant and the oil mixture has been formed, and your car is operating in a manner which is not normal, then it is time that you had an immediate action. No funny business, car runs happy as can be. I got the car back last night and I've put about 130 miles on it. So I popped the hood on my wifes sonic today to do a check up and when I looked at the coolant it had what appeared to be oil in it. They said it was most likely either the head gasket or the oil cooler, but since it hadnt over heated it was more likely to be the oil cooler. The coolant was flushed 3 times and the oil was changed (old oil looked fine.) ![]() I had the ofhg replaced, oil thermostat gasket replaced, upper radiator hose, thermostat hose, cheesy plastic overflow hose, and the expansion tank/cap replaced. The engine tested 230 psi across all 6 cylinders with less than 10% loss, runs flawlessly, and the temps never dare to creep up.Īfter digging on the forums and from what I could find, I did the following: I took a brake bleeder to the expansion tank and pulled out over a quart. I have a 2014 rwd 335i msport (83k miles) that's been mixing oil into the cooling system.
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