Where is the block coolant drain?

Where is the block coolant drain I have seen it listed in 3 different places and still can't find it.

 

2 are on each side @ rear of block, the 3rd would be the radiator I assume ?



courtesy of FirstGenVol

 

You can also try draining at the oil filter cooler hose (this is the lowest point in the system). I’ve not done it, but will next time I do the coolant. A member here posted a picture with some small debris trapped in that cooler port hole that he was working on and it made me go hmmm.

 

Thank You , with the picture, I found the one on the right side, it's really hidden up there. Maybe I'll do the line on the filter, I have to pull the heads.

 

Only the Drivers side has the low point line as part of the oil to water exchanger. Pass side only has the ridiculous access point, block drains with the silly little port. Honestly the easy way was to remove the heater line at the control valve and blow air thru it which forces the fluid into the rad anyways. Then just drain 99% of it from the rad drain point. The amount of coolant loss after air purge would be very small. Those little block drains have most likely never been opened. Risk is damage to them and have a leak. Removal of the oil cooler exchanger line will definately low point drain the Driver's side of the block.

 

I was able to remove both engine drain block plugs on mine with no issue. The plug is brass and the factory manual say to just ‘open valve’ by unscrewing slightly. I did that and the water began trickling out the spout as designed. Then I got to thinking the screw was the low point and debris would trap there so I backed it out and there was some tiny sediment on the screw tip. Made for a quicker drain without the plug in the way.

Its a 10mm socket and you need a 12” extension on a 3/8” drive. Long arms help.