I'm trying to flush my radiator and I understand that a lot of the coolant is in the block. I think I found one of the engine block drain plugs on the passenger side. It's a hex bolt about 2 inches above the oil pan rail. Is that right? And where's the one on the other side of the block? All I can see is the oil filter on that side.

.Pretty sure I had to heat them with a propane torch after penetrating oil didn`t do a damn thing.