It seems like I've got a small leak from the thermostat housing. I've never been able to get it off due to the bottom bolt being almost impossible to get to as the A/C compressor makes it hard to get any tools in there. Anyone got any tips/tricks on accessing that bottom bolt with the A/C compressor or will I possibly need to drop it down?
 
Cheers

I am pretty sure you can get it off with a small handled ratchet mate

Cheers Ace, is that a 3/8" size set above?

Nah 1/4in