[Eddie_EM]

Hello guys, I was checking for coolant level on my N46 and I was surprised to find traces of oil in coolant. I know that is as a result of oil mixing with coolant either in the Engine or the two oil coolers. I wanted to know if there's a way to check any of the two coolers if they are bad before I replace the bad one

[BalanBro]

I'm not familiar with that engine, but I know on the straight 6 engines, the most common cause is the oil filter housing gasket. Both coolant and oil pass through that gasket, so when it fails, mixing will occur.

[crashoverride]

Originally Posted by BalanBro

I'm not familiar with that engine, but I know on the straight 6 engines, the most common cause is the oil filter housing gasket. Both coolant and oil pass through that gasket, so when it fails, mixing will occur.

This here is the most likely cause.

This isn't an occasional might happen to you thing. This spot WILL fail and will happen to everyone. If it hasn't been addressed already.

[Eddie_EM]

Originally Posted by crashoverride

This here is the most likely cause.

This isn't an occasional might happen to you thing. This spot WILL fail and will happen to everyone. If it hasn't been addressed already.

I found some coolant droplets 💦 from eng.oil return line from cooler. The engine oil cooler gasket is intact. An suspecting my oil cooler is damaged. Now I know where to start from. Am happy it's not the trans oil cooler that is damaged. Am I correct to rule that my engine oil cooler is faulty since the 2 coolers only have one thing in common and that is the coolant. It's present in engine oil.