Can someone confirm this bolt in my picture, which is about 6 inches forward from my oil filter is the driver side drain plug?

 

That's the right place. Middle of the block (front to rear), just above the oil pan rail. The knock sensor is plugged into the same hole on the passenger side.

There may be enough accumulated gunk that nothing comes out when you remove the plug. If so, poke it with a screw driver and you should get flow.

FYI: Here's a good shot of the other side in this thread.

 

I seemed to have rounded it off while trying to remove it. Any suggestions on how to get it out?

 

Pliers? Vice grip?

 

Next smallest size socket, in 6 point. Pounded on. An impact may do a better job removing it than a ratchet.

 

^^^ This ^^^

Might help to file it down to a nice sharp fresh-looking hex. An impact socket, to go along with using impact rather than a steady pull, is always better than a "chrome" one.

A drill is the next step.

 

even better:



extractor sockets, they really bite onto anything rounded off. I got some very very tight stuff loose with these

 

Drain plug for coolant?

 

Thanks all. I ended up just draining it on the other side by removing the knock sensor. Filled it up with garden hose water and gonna run it for a few min then drain and refill with 50/50.

 

One of the lower water pump bolts go into the cooling system passage too, I can't recall which side.

 

The two sides of the block are not connected (coolant-wise). The knock sensor drained that side of the block. The drivers side did not drain. But the drain/fill/drain method will dilute whatever is in there.