Fully draining coolant

[Andy2025]

Hi,

New poster to the forum, although I've cleaned so much good advice so far!!

I've a M108s Dual Speed, new to me and i'm slowly giving it a full service so I know everything has been done. I've followed the manual for a coolant change but only got half (5 litres) of the supposed 9.7 litres that should be in there. I'm assuming the half I am missing is in the block and not draining from the radiator drain.

Does anyone have any tricks for getting all the old coolant out? Is there a block drain somewhere (or bolt that goes into the water jacket) that I can use? Manual doesn't mention anything...

What are you all doing?

My new coolant is pre mixed so I can't really flush the system with water then put a stronger mix in to compensate (if you know what I mean)

Any advice greatly appreciated
Thanks

 

[North Idaho Wolfman]

Passenger side just below the rear frost plug.
Bolt with a sealing washer.

 

[Andy2025]

Thanks, I'll take a look tonight and see how easy that is to get to (it's pretty tight against the cab).