Thread: How to completely drain the coolant?

undo the bottom rad hose, if your changing to a different type of coolant, undo top and bottom hose, remove thermostat, open up heater and flush through with the hose until clear then blow through lightly with air to remove all the water then fill with new coolant

the v8 has one drain plug each side of the block, near the engine mount bracketry.

jc

near the engine mount bracketry.

///Near -inside under within completely unreachable are probably more apt!!!!!LOL

Regards Philip A

Originally Posted by PhilipA

///Near -inside under within completely unreachable are probably more apt!!!!!LOL

Regards Philip A

don't have to spoil the fun Phillip!!


jc

Originally Posted by ade

.... blow through lightly with air to remove all the water ...

blow lightly ??? how about connect a leaf blower to the rad hose,
its how I blow out the intercooler

Bah, I never drain coolant 100%. Drain what you can and collect for disposal, then flush the system with clean water until the outlets run clean. Refill with concentrate and water, never "complete fill" coolant. That way you never need to carry coolant in the vehicle, only drinking quality water. Add water if needed on the road and add concentrate when you get home.

Originally Posted by ade

undo the bottom rad hose, if your changing to a different type of coolant, undo top and bottom hose, remove thermostat, open up heater and flush through with the hose until clear then blow through lightly with air to remove all the water then fill with new coolant

When I got my 1994 disco V8i auto serviced, the landy mechanic suggested that I should change the coolant from Green (current) to Red, said the Red was better for older V8i, something to do with the alloy metals used to build the earlier model engines v later models.

Your thoughts appreciated

Regards
Rich

I generally use nulon products and their recommendation is for the red (OAT) coolant so thats what i run. No issues yet