I know this is an older topic, but I'm about to drain my coolant, run some of that radiator de-scaler through, then "rinse" with water. Is there a best way to get ALL the coolant out? I drained the radiator when I installed my water temp gauge, but I didn't get all of it out. Would parking the car on an incline (nose down) allow me to remove all of it? I a run pretty antifreeze intensive mix, so I don't want much leftover coolant before I fill it up with water, if at all possible. Thanks.