I started to smell some coolant a couple weeks ago after driving for an hour. At the time I checked and have periodically checked the coolant level, the oil and for any signs of leaks but no luck.
Today I checked and it looks like some residue on the driver side, at the bottom of the radiator on the frame. I know the radiator and water pump were replaced a couple years ago. The coolant level IS down. There is not smells in the cab and the carpet is dry.
So, I plan on trying some leak stop for the radiator in case there is a pin hole or such.
Anyone have any other ideas? Just in case there is no pin hole leak?