
Interior of a radiator with rust, scale and sludge. No proper circulation possible. The efficiency of the radiator goes down – the temperature of your engine goes up…
Signs of aging:

- Brown, dark or off-colored fluid in the radiator or the overflow tank
- Overheating or poor starting on cold mornings
- Temperature gauge fluctiation
Severe corrosion can occur when additives that protect the colling system have been depleted.