You will need: a flat-blade screwdriver, coolant, cleaning cloth, a container for draining coolant with a capacity of at least 8 liters, pliers.
Warnings: Use coolant (antifreeze) based on ethylene glycol.
Change the coolant only when the engine is cold.
When starting the engine, the expansion tank cap must be closed. Screw the tank cap tightly. The cooling system is pressurized when the engine is running, so coolant may leak from under the loose cap.
The coolant is toxic, so be careful when handling it.
1. Install the car on a flat horizontal platform.
2. Turn away a stopper of a broad tank.
3. Connect the radiator hose of the cooling system located at the bottom of the tank on the right side to the drain cock.
4. Turn off the valve of the drain cock.
5. Place a container under the hose and drain the liquid from the cooling system.
6. To ensure complete draining of the liquid from the system and guaranteed removal of air from it during refueling, squeeze the antennae of the clamp for fastening the heating hose of the throttle assembly, slide the clamp along the hose...
7.... and remove the hose from the nozzle of the throttle assembly.
8. Close the drain cock.
Note: If the expansion tank is heavily soiled, remove and wash it.
9. Flush the cooling system by reinstalling the coolant supply hose to the throttle assembly and slowly fill the system with water through the expansion tank to the level of the vapor tube.
10. Start the engine and let it run until the electric fan turns on.
11. Stop the engine and drain the water.
12. Flush the cooling system until clean water begins to drain.
13. Disconnect the hose from the throttle assembly fitting again.
14. Fill the engine cooling system by pouring coolant into the expansion tank until until it begins to pour out of the fitting on the throttle assembly and from the removed hose. At the moment the liquid starts to flow out, install the hose in place and secure with a clamp.
15. Start the engine and warm it up to operating temperature (before turning on the fan). After that, stop the engine, check the coolant level and, if necessary, add it to the expansion tank to the mark «MAX».
Note: When the engine is running, watch the coolant temperature on the gauge. If the arrow has reached the red zone, and the radiator fan does not turn on, turn on the heater and check how much air passes through it. If the heater supplies heated air, the fan is most likely defective, and if it supplies cold air, then an air lock has formed in the engine cooling system. To remove it, turn off the engine, let it cool and unscrew the plug of the expansion tank. Start the engine, let it run for 3-5 minutes and tighten the reservoir cap.
Helpful hints: For better filling of the system without air pockets, periodically squeeze the radiator hoses by hand.
After a few days of operation of the car after replacing the coolant, check its level. Top up if necessary.
If after a very short time the color of the fresh liquid turns brown, then you have poured a fake into which the manufacturer «forgot» add corrosion inhibitors. In addition, one of the signs of a fake is a sharp complete discoloration of the liquid. The dye of high-quality coolant is very resistant and only darkens over time. The liquid, tinted with linen blue, is discolored. Such «antifreeze» needs to be replaced quickly.