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My machanic just called me and told me that the head gasket is in good condition and we now have no idea that what happened to my engine oil in coolant mixture!
Does anyone has any idea to know what other possiable way to check ?

Please input if you do have any idea.

Thanks!!!

Ben

Does your EJ20G have an oil cooler? Maybe there is a leak in it allowing oil and coolant to mix.

is this the car that had the oil/coolant mix in the reservoir next to the radiator?

my car had this too, or at least it looked like it. i took out the reservoir and dumped out the fluid. it was just coolant. apparently the dark stuff was probably oil, but it stuck to the walls of the reservoir, so it didnt exactly mix.

i believe this was becuz when the car was N/A, it had a rod knock, and i just drove it til it blew sorta. i knew i was doing a swap into it anyway. (i didnt plan on blowing it, on the drive down to my mom's house from my apt's, it blew about 5 blocks away. )

Thanks guys for your suggestion, I just told my man to check it out, but they did asking me will there be the turbo problem!!???

Do you guys know how can I check if there are leaking inside the turbo and cost this mixed oil and coolant?

Will there are any possiable area to let the oil to mix with coolant? all I can think about is Oil cooler, turbo and the block.... acording to the head remove, my man told me the head gasket is in good condition and can't see any leaking mark on that area!

I feel very down to can't find the problem when we remove the head. I am totally lost and now become feeling unsafe to have this ej20g engine......

Ben

How fast does the coolant mix with the oil? If it happens pretty quickly, you could disconnect the coolant lines from the turbo (just connect the hoses together) so that the turbo no longer sees any coolant. Then if the problem goes away (or if you see oil coming out one of the turbo's coolant fittings!) it means the turbo was where the two were mixing.

Hi Vrg3 ,I was clean the rad. once and after I refill the coolant, I could see the oil in the coolant reservor instantly, Maybe I should try your method this time and hope it should be one of them to cost this problem so I could find a better solution. BTW, can I bypass the oil cooler line?

Ben

Yeah, try bypassing the turbo's coolant lines.

You can bypass the oil cooler's coolant lines too. You could just use 1/2" caps to cover the nipple on the block and the nipple on the water pump.

If the problem turns out to be either of these, though, you should not leave them simply bypassed, because oil will leak out. You should replace the turbo or replace the oil cooler. Or get rid of the oil cooler.

EDIT: nevermind i thought this was a different person's car.