Coolant drain plug (engine block)?
 

Anybody know where this is? I don't have my ramps here and the car kind of can't move at the moment.

Even rough approximations would help greatly.

Are you talking about the drain plug at the bottom driver's side of the radiator? Once you unplug it, coolant will come out of there and also from the side of the radiator (90 degrees to the right of the plugged hole).

It's straight down from the air bleeder, on my M42 there is a tube or wire right above it blocking it from sight, but you can feel it easy. Also use a wide blade screwdriver to unscrew it << Nevermind this is for the Rad, not the block my bad,

The one on the engine block. It is on the passenger side near the exhaust header, do this when the engine is cold or you will burn yourself on the header and/or hot coolant.

Coolant flush procedure: http://www.pelicanparts.com/BMW/tech...lant-Flush.htm

See Figure 8.

It is just a plain old bolt in the side of the block.

tastade, you're a lifesaver.

Everyone else gets a thanks too.