![]() With this oil cooler, the engine oil passes through copper tubes that let in air through the fins, hence the name “fin and tube.” The first type of engine oil cooler is the fin and tube system. There are two different types of oil coolers, and they take the form of a small radiator. ![]() It is used for cooling those car components that use engine oil, and it performs this function like a heat exchanger. An engine oil cooler is an engine component that removes the excess heat from the internal combustion engines of cars. How much does an oil cooler help a car engine? A whole lot. The heated oil has to be cooled, or it will wreak some havoc on the engine components. In performing these functions, it absorbs some of the immense heat that the engine has. This is the prime temperature it needs to clean, cool, and lubricate your car engine. When in a functioning engine, engine oil should ideally be between 180 degrees and 200 degrees. ![]() The average automobile engine creates a lot of heat, which affects the oil that plays a key role in its optimal performance. So what’s the big deal about lousy oil cooler symptoms? Let’s start with how oil coolers work. After a while, your engine’s performance and service life get affected. The oil cooler is an essential part of your car’s oil cooling system, without which your engine components cannot function optimally. Interestingly, this oil picks up a lot of heat in lubricating these moving parts, so much heat that it needs to be cooled down using a component known as the oil cooler. This is because of the multitude of moving parts that require lubrication to function optimally. 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.What is the big deal about bad oil cooler symptoms, and why should you know what they are? Your car engine cannot function without oil. This car is still new to me and I've been physically ill dealing with what might be looming doom. I've been wildly stressed out about this entire situation for two weeks. 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. I haven't found much info about it online, or any diy's about replacing it. 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. 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. 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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