How to Replace Car Coolant?
2 Answers
Car coolant replacement steps are as follows: 1. Drain the coolant: First, open the reservoir cap (ensure the radiator cap is tightly sealed at this time), then loosen the drain valves on the engine block and radiator (this should be done with the engine running at low speed while warm). Drain the coolant completely. 2. After draining, tighten the drain valves on the engine block and radiator. Refill with the specified coolant through the radiator filler neck until the coolant level in the reservoir reaches the marked "FULL" line. 3. Securely close the radiator cap, then run the engine until it reaches normal operating temperature. Shut off the engine and allow it to cool down to room temperature. 4. Recheck the coolant level in the reservoir and top up if necessary. The process is complete when no air bubbles appear in the reservoir during engine idle operation.
I've done coolant replacement quite a few times, and it's basically a few simple steps. First, park the car and wait for the engine to cool down completely - don't rush or you'll get badly burned. I usually wait about an hour. Then locate the drain plug under the radiator, place a large pan to catch the old coolant when draining, being careful not to spill any on the ground and make a mess. Next, if you want, you can flush the system by pouring in some distilled water and draining it to remove residue. After that, it's time to add new coolant - I recommend using 50% pre-mixed antifreeze coolant, pouring carefully up to the full line without spilling. Then start the engine for about ten minutes to bleed air bubbles and adjust the fluid level. Finally, check all connections for leaks and you're done. Doing it yourself gives a real sense of accomplishment. Coolant maintains stable engine temperature - when properly changed, your engine won't overheat in summer or freeze in winter. I change mine every two years and feel the engine lasts longer.
