I was changing my oil and hit a coolant line and put a hole in it not sure what this coolant line is it looks like it runs front
He water pump and goes to cylinder looking think toward the back of the motor where from the cylinder two lines go to the transmission anyone have any idea what this is

 

Yeah, I showed that to my diesel mechanic from Cleveland. Mr. Woodle they call him, great guy. He said if green fluid is coming out. That's your A/C line. He said you can just leave the line plugged with chewing gum. You'll be fine without it.