Radiator/transmission leak?

[Blakestuhh]

I've noticed my truck leaking something here lately. I got under there and looked and it seems to be the lines coming out of the radiator that go to the transmission? There's like an oily build up. Does anyone know what it is, or how hard of a fix it is?

 

[KReePiN]

Those are your transmission cooler lines......mine did the same thing.......i had to replace the radiator to fix it....but you wanna make sure they are tight before you spend money on a radiator....check the condition of the fittings as well .....

 

[Blakestuhh]

Yeah I just got a brand new radiator a year ago!

 

[KReePiN]

Yeah man mine wasnt old when i replaced it either.....i would just get some cleaner and clean it all up near the leak.....then see where its leaking from exactly......if theres a small crack.....or if its just coming out of the threads.mine had a little crack.

 

[ChrisAU]

Take the lines loose and put some thread sealing tape on them and put them back in snugly.

 

[Blakestuhh]

Thanks for the advice I'll give it a try! Also why is it dark, wouldn't it be more antifreeze?

 

[ChrisAU]

No that is transmission fluid running through those lines.

 

[Blakestuhh]

Hmm.. Ya learn something new everyday!

 

[ChrisAU]

It brings trans fluid through the radiator. At first, it acts to warm the fluid, then after long periods, it cools it. Its more of a regulator than a cooler.

 

[Blakestuhh]

I had no idea! Now I feel smarter!