Table of contents: Removal ↓ Refueling ↓
The coolant should be replaced only after repair of the cooling system, when the liquid was drained. Liquid replacement during maintenance is not provided. If the cylinder head, sealing gasket, radiator, heat exchanger or engine were replaced during repair, it is necessary to replace the coolant. This must be done, because during the running-in process, protective additives are deposited on the engine components made of light alloys, thus forming a corrosion-protective layer. If the liquid was used earlier, its composition does not allow the necessary protective layer to be created on the new engine components.
Warning: Coolant is slightly toxic and should not be disposed of in places other than designated disposal sites. Local authorities should be informed of disposal sites.
Removal
Warning: There is a danger when lifting and placing the vehicle on stands! Therefore, please read the subsection first Jacking up a car.
1. Raise and place the vehicle on stands.
2. Remove the lower engine compartment cover, referring to the subsection Removal and installation the lower engine compartment cover.
Warning: Before opening the expansion tank on a hot engine, place a thick cloth on it to prevent burns from hot liquid and steam. Open the tank cap only when the coolant temperature is below +90°C.
3. Open the expansion tank cap.
4. Place a clean container under the radiator.
5. Open the drain plug (arrow on the illustration) turn left. It is recommended to put a hose on the drain pipe. Collect the drained liquid.
6. Diesel and some petrol engines: Additionally remove the coolant hose from below the oil/coolant radiator (oil radiator). To do this, open the clamp with the HAZET 798-5 tool and push it all the way back. The oil cooler is located at the oil filter flange. Drain the oil completely.
Refueling
7. Make a mixture of 50% water and 50% freeze and corrosion protection product, refer to the subsection Antifreeze - a means of protection against freezing.
8. Place the coolant hose onto the oil radiator and secure it with a clamp.
9. Tighten the drain plug on the radiator.
10. Install the lower engine compartment cover, referring to the subsection Removal and installation the lower engine compartment cover.
11. Lower the car onto its wheels.
12. Slowly fill the system to the MAX mark on the expansion tank.
13. Start the engine and let it run at a high speed of 1500 rpm for about 2 minutes. At the same time, fill the expansion tank with liquid up to the overflow hole.
14. Close the expansion tank.
15. Start the engine until the electric fan turns on.
16. Stop the engine and let it cool.
17. Check the coolant level and top up if necessary. When the engine is warm, the coolant level should reach the MAX mark; when the engine is cold, it should be between the MAX and MIN marks.