I am getting differant responces from everyone I have talked to.

But here is my questions, is there coolant running through the stock k03 turbos on a B5 S4?

 

I think no pretty strongly,the only car I have seen that on are the new BMWs and I had never seen that before lol

 

Its very common actually, this is the case on eagle talons, ford turbochargers, and some others.

I am asking if there is a coolant passage through the turbos to keep them cool in addition to the oil.

 

I have taken talons apart and havent seen that, but like I said I don't think that coolant runs through them

 

Here is what it looks like. Notice the holes on the top and the side of the cartridge. The top and bottom are for Oil and the sides are for coolant. This turbo is for a talon, its a 16G turbo.

 

hmmm dont remember that whenI took it apart

 

anyone know for sure if coolant runs through these turbos or not...... better yet, anyone have a picture of one recently removed from the car?

 

over the summer my i had a leak in my after-run coolant that specifically cools the turbos after engine shut off. i dont know if this is what you are talking about, but to me, it makes sense that coolant is running through the turbos since this after-run coolant is specific to the turbos. hope that helps.

 

Thank you much, that is what I thought.

 

i've read about that after-run, the fluid is drafted backwards through the turbos after shutdown, i'm not sure if that iss antifreeze or oil? I have the motor sitting on the floor in the garage, although I'm not home to check it out.