Engine

Coolant Replacement

Here's the procedure I used to drain the old coolant and add the new mixture:
First, I bring the car up to operating temperature (when the fan(s) kick in) so that the thermostat
is in the open position. Next I set the cabin heater/ac to its highest temperature setting. Once
the engine is fully warmed up, I shut it down. I jack up the car on both sides and put it on
stands. Next, open the radiator drain and catch the old fluid. Use a large open container, as
there are over four gallons of coolant/water in the system. As the old fluid starts to come out,
remove the overflow reservoir cap (careful, it's hot). Once all the fluid is drained from the
radiator, close its drain plug. Slide the catch container under the left rear bank of the engine
directly below the left side engine coolant drain. Remove the drain plug. Replace the copper
crush ring with a new one. Once it stops draining, replace the plug. Repeat the last four steps
for the other side of the engine. You should have about four gallons in the catch tray. Make
sure all drains are closed, and begin adding the coolant/water mixture into the overflow
reservoir. This may be a long and slow process, as you may have to "burb" the hoses to let
trapped air out. Once you have added about half or more of the mixture, start the car and
continue adding to maintain a proper level in the reservoir. Watch the temp gauge for signs of
overheating.

I hope this helps. Merry motoring. Ed Ruiz