From what I understand, this is how you flush. Drain radiator, refill radiator with water, run engine. Then drain radiator, fill with 50/50 mixture and you're done.

When you refill with the final mixture of 50/50 in the radiator, you still have some water in the engine coolant passages that will dilute the mixture once the thermostat opens. So how do you go about getting 50/50 in the radiator and engine?

 

subject covered many times

you cannot simply drain the radiator, you have the drain the block too

there's a coolant drain on the block where the driver's engine mount is

drain both, then flush and fill

there's a good write up on this subject on www.fc3spro.com

and ohhhhhh I forgot, SEARCH!

 

Not necessarily. You can buy a prestone coolant flush kit and run a garden hose to it while the car is running.

 

eh I just paid midas :P no mess. No problems. ...just 50 bucks poorer ><

 

i wouldn't trust the guys at midas to do a good job, they probably just pulled the radiator plug and drained it and refilled it, leaving 50% of the coolant in the motor still.