So far today I replaced all of my spark plugs (all looked pretty good for 92k+), buttoned the engine back up, got the girl up on jack stands, & began my cooling system refresh. Opened & drained the two blue screws at the front (the side spout on the rearmost of the two was a nice surprise

), moved to the block & . . .
how the @#$!!% are you supposed to remove the engine block coolant drain plug?! I can just
barely get my hand up there with a 1/4-drive 13mm socket & wrench & don't seem to have anywhere near enough leverage to break it free to hand remove.
Do I even need to bother draining the block if I'm going to be replacing the water pump & thermostat?
