How Many Liters of Coolant Are Needed for a Classic Sylphy Coolant Replacement?
3 Answers
Classic Sylphy requires approximately 5 liters of coolant for a full replacement. Before completely replacing the coolant, conduct a thorough inspection to check for any signs of leakage or cracks in the pipes, with a particular focus on the five-way pipe. The five-way pipe is named for its five connection points that link various parts, and the coolant flows through it before being distributed to different sections of the car to perform its function. If there is any sign of coolant leakage in this area, replace the hose or resecure the connection as needed. Drain the old coolant, then flush the fluid channels with clean water. Add water to the coolant reservoir and continue filling until water flows continuously through the engine cooling system. Start the engine and let it idle for 3 to 5 minutes to circulate the water. Initially, the water draining from the reservoir may appear slightly pinkish. Continue adding clean water until the outflowing water runs clear. Remember to disconnect the heater hose and drain the water from the heater core. After draining for about an hour, add the new coolant through the radiator hose to allow it to flow quickly into the radiator. Then, fill the coolant reservoir with another batch of coolant until it is nearly full. Start the engine and let it run for about 10 minutes. As some air is expelled from the cooling system, the coolant level will drop. Top up the coolant until it reaches the "MAXT" mark on the reservoir.
My classic Sylphy had its coolant replaced last year, using about 4 liters for the whole process. The exact amount depends on how you do it - if you just drain the old fluid from the radiator without flushing, it's around 3 liters. But experienced drivers know it's best to do a thorough flush to clean out old fluid and debris from the engine waterways, which requires preparing 4 liters to be safe. When replacing, you must operate on a cold engine - open the drain valve at the bottom of the radiator, drain completely before filling with new coolant. After replacement, remember to start the car to let the water temperature rise to normal, when the fluid level will drop and need topping up. I did it during a Tmall Auto Care promotion, spending over 100 RMB, and they even performed a radiator pressure test.
I changed the coolant for my Sylphy by myself a few days ago, and two 2-liter bottles were just enough. The whole process used about 3.8 liters, but I recommend you prepare an extra half-liter just in case. During the replacement, I noticed a few key points: the drain valve is located at the bottom right corner of the front end and is only visible when you crouch down. After draining the old coolant, you need to start the engine and wait for the thermostat to open as the temperature rises to completely flush out the old coolant from the engine. Air in the cooling system can cause abnormal water temperature, so it's essential to repeatedly bleed the air at the end. It's best to choose the original blue coolant, as mixing different colors can lead to scaling. Doing it yourself saves labor costs, but you need to prepare a basin for the waste fluid and a wrench.
