210 M104 drain bolt on block... where?
 

where on the passenger side is that bolt to drain coolant? near or between what exhaust manifold? near firewall, middle, or near radiator?

It's about 2/3 to 3/4 of the way from the front to the rear of the block, behind the rear exhaust manifold. It doesn't look like a bolt, it looks like a hose connection. I think because it is designed for you to connect a hose, so that when you loosen to drain, you can drain into a bucket or wherever exactly you want it to go besides on the shop floor or running down your driveway.

Good luck,

thankx, did flush and fill today! that nipple description helped!
:)

Hi, reviving an old thread here. Off the top of their head, can someone tell me the size of the tube that should go on the fitting? I may be doing this tonight and would like to go to the store and pick up the appropriate sized hose on the way home from work.

Thanks in advance!

1/2" heater hose is a little loose but works OK.
Dan