[DMCForum] Coolant change help

["Mike Walsh" <yahoo@xxxxxxxxxxxxxx>]

I want to change my coolant and was having problems trying to unscrew 
the engine plugs. I am also leery of taking off the rad hoses (done 
it before) because the connectors are plastic and there is very 
little play in the hoses to get them free.

I have a bleeder bypass installed at the water pump bleeder valve, 
which T's into the small hose going to the coolant bottle. I was 
thinking of disconnecting this hose at the coolant bottle and 
extending the hose to the outside of the engine compartment. When the 
engine is started and the thermostat opens the old coolant should run 
out that hose. While this is happening I was going to keep adding de-
ionized water to the coolant bottle until the runoff from the hose 
was clear. Then add antifreeze and test the concentration to make 
sure it has the right proportions.

I know this will take some time, but after trying other methods 
before, it would be a lot quicker and cleaner than spending part of 
the afternoon playing with rad hoses and trying to get engine plugs 
out.

Does this method make any sense and will it work or totally screw 
things up (yes I plan on watching everything carefully including the 
temp gauge)

Mike
#17084

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