Join Date: Apr 2010
Location: Canberra, , Australia
1987 K100RT Coolant filling question
So, I'm about to renew my coolant.
My Haynes manual says to fill the system to the base of the filler neck, run the engine for a while until the thermostat turns on the water pump and expels some air from the system, then top up, and repeat, probably several times until all of the air is expelled. It specifies to do this with the cap off to allow the air to escape.
The filler cap is under the petrol tank. Does this mean I have to refit the tank every time, then remove it to top up? I'm planning to do 3 flushes before the refill, so this will take all day long, if not longer.
Is there a work around?
Another thing, I'm planning to use a flushing agent - should I put this in the reserve/overflow container as well, or could the pipe leading to it have some left over even after flushing again with distilled water?
And one more question - is it really necessary to pre-mix the coolant or flushing agent with water before filling? Can't the mixing be done in the engine as the stuff circulates?
Last edited by ricketyclik; Dec 11th, 2010 at 6:30 pm.
Reason: Forgot the last bits