The G12 antifreeze should be changed every 2 years or 60,000 miles, whichever comes first. However, it is recommended to check the coolant level regularly and top it up if necessary.
To change the antifreeze in your Volkswagen Jetta, follow these steps:
1. Park your car on a level surface and turn off the engine.
2. Allow the engine to cool down completely.
3. Open the radiator cap.
4. Drain the coolant from the radiator and overflow tank.
5. Flush the cooling system with water until the water runs clear.
6. Close the radiator cap.
7. Fill the radiator and overflow tank with new G12 antifreeze.
8. Run the engine for a few minutes to circulate the antifreeze.
9. Check the coolant level and top it up if necessary.
It is important to follow the manufacturer's recommendations for changing the antifreeze in your vehicle in order to ensure that your vehicle is properly protected against freezing and overheating.
