Parts and consumables:
- coolant;
- funnel;
- clean rag.
Notes:
The manufacturer recommends the use of ethylene glycol based coolant (antifreeze). Do not mix liquids of different colors and different manufacturers. If you need to add coolant, but you do not know the brand of liquid filled into the system, replace all the liquid in the cooling system. Only use products from trusted manufacturers. Remember that the use of poor quality coolant leads to costly engine repairs! Before starting work, place the Opel Astra car on a flat horizontal surface.
Warnings:
Check the coolant level only on a cold engine. The coolant is toxic, so be careful when handling it.
Do not fill the reservoir much higher than the "KALT/COLD" mark as the volume will increase when the engine is running.
When starting the engine, the cap of the expansion tank must be tightly closed.
Helpful Hints:
Keep an eye on the coolant level at all times. Its sharp decrease or increase should be a signal for an immediate check of the engine cooling system. If the freshly poured antifreeze suddenly suddenly quickly changed color to brown, then you were sold a fake, in which they "forgot" to add corrosion inhibitors. Replace the fluid as soon as possible before it has had time to corrode the cooling system.
The expansion tank is installed in the engine compartment on the left side.
1. The coolant level with a cold engine should be slightly above the "KALT / COLD" mark on the wall of the expansion tank.
2. To top up the liquid, unscrew the cap of the expansion tank.
3. Add coolant to the required level.
4. Wrap a stopper of a broad tank.
Warning:
Screw the cap on the expansion tank tightly. When the engine is running, the expansion tank is under pressure, so coolant may leak from under a loosely wrapped plug or the plug may be torn off.
Source: http://www.automnl.com/model/opel_astra_h2/127/








