Always use the right radiator pressure cap for your car. A cap with the wrong pressure rating will cause your car to overheat. Look on the cap itself for pressure rating information.

2torial #0714: Learn2 Flush a Car Radiator (Continued) Place the drain pan Never allow coolant to drain out onto the ground. Its sweet smell attracts animals that will drink it. Don't leave it to drain unattended in a pan, for the same reason. Buy an inexpensive pan just for this purpose or use a pan that is no longer used in the house. Don't rummage around in your kitchen for the Christmas turkey roast pan. Antifreeze-flavored foods aren't so tasty. The pan should be big enough to hold the coolant, but not so deep that it doesn't lie flat or slide easily under your vehicle. Tipping a pan on its edge (to slip it into position) is a bad idea. It will only lead to spills. The location: Get down and have a look. Make sure that the pan is centered under the radiator's drain valve (called a petcock) from where the coolant will flow. Step 3