Hi everyone, I am new here and was looking to see if anyone has run into this problem. I was checking my antifreeze today and noticed a redish color oil in it. At first I thought it was engine oil and I had a blown head gasket, but then started thinking that tranny fluid runs through the radiator and I believe it to be transmission fluid in the antifreeze.

Has anyone else had this happen?

If it is the radiator-Follow-up question: I was looking at removal and how hard it will be. Looks pretty easy except for the way the tranny lines mount to the radiator, because appear different from anything I've seen in the past. Do those aluminum or stainlees looking nuts around the the tranny lines that hold the lines to the radiator just back out like a bolt?

Anyone have any experience with this?

Thanks for your help.

 

Yes, tranny fluid it typically red. Sounds like you've got a seam somewhere between the radiator tanks leaking. Get that fixed...don't want the antifreeze leaking into the tranny.

 

Yes.
Change that radiator out asap, and change tranny fluid. This happened on my sisters pathfinder and by the time they noticed it, the tranny was shot and needed rebuilt.