School me on my Oil cooler

[macattack]

Developed a oil leak on my cooler.  

I am not familiar with a oil cooler and therefore any help is greatly appreciated. 

Does oil or coolant go thru the small tubes on the core?

Also in the pic is that (about 1 in or 1.5 in) steel line above the cooler oil or coolant.  I think that is where my leak is.  I believe there is a couple of o rings and a gasket there.

Again any help is greatly appreciated. 

Thanks 

Edited September 13, 2023 by macattack

[BOBWhite]

I believe oil goes through the small tubes and the coolant surrounds the tubes. The oil first goes through the oil cooler then it goes to the oil filter assemblies. 

Heres a pic from the manual that shows each of the tubes. I think the tube you are referring to carries the cooled oil back to the oil filter assembly.

[Joey Mack]

Coolant through the tubes, oil around it.. a closer picture would help. You sure it's not coolant? Did you wipe it off before taking the picture? 

[macattack]

Thanks for the info.  

This pic was taken when there were no leaks.

I will  try to get a recent pic.

Almost sure its oil leaking from the steel tube #10 on top of cooler.  I think #11 the o ring  in the diagram is my issue.

Can that o ring and gasket be replaced without removing the cooler?

Thanks  again. 

[terry]

Unbolt tube #10 at front of oil cooler and slide out of oil cooler head, pry old o ring out of cooler head, put new O ring in in ,put some oil or a dab of grease on oil outlet tube and reinstall.    terry

[macattack]

Thanks Terry.

Do I have to  drain the oil?

[fjh]

31 minutes ago, macattack said:

Thanks Terry.

Do I have to  drain the oil?

no