C 15 loosing coolant

this is where the hose is at coming off of the tube behind the turbos

View attachment 58160

 

Look for this: Cold water leak......look at every hose con. and every clamp. You're looking for a white residue like a drool heading south with gravity. Check every hose and connection.

What happens it when it heats up, it expands and seals, when it cools it contracts and leaks. If you park overnight ( engine off ) then take a large sheet of cardboard ,
( couple of oil boxes will work ) and lay them under engine. When you come back the boxes will tell you about any leaks anywhere.

I did this test myself every six months just to do it. It helped me catch little issues before they got big. ( AF, ps hoses , rouge filters, unseen oil leaks and even caught the wash bottle checking out )

Jmo ( ke )

 

Before I Have the same Problem ,was the Headgasket on my C13

 

Mabe a bad head gasket... one thing you can try is get a glass of water and put the coolant overflow tube ino the glass of water when the engine gets up to temp. If you see bubbles you have a bad head gasket. You can have the coolant system pressurized for leaks as well. Please advis what year the tuck is and the mileage.

 

Headgasket

 

Sometimes it is the precooler leaks and into the motor it goes being undetected.