There's a smaller hose that looks impossible to get to.. It's going into the engine from the thermostat. It isn't the main radiator hose into the thermostat, obviously. This hose is kinda nestled behind the air intake/turbo. I have no idea how to get to it, as it appears as though I'd have to take a lot of crap apart that I'm not prepared to take apart. Especially after I just replaced the water pump and that was tedious enough. Any help/information? Many thanks in advance.