Water is always present in oil tanks due to condensation when temperatures inside and outside the tank differ. Oil and water do not mix and water is heavier than oil so water will always sink to the bottom of the oil tank.
Rub some ‘Kolor Kut’ paste on the lower part of a dipstick and lower it into your oil tank for 10 seconds to check for the presence of water. This compound changes colour from rusty orange to bright red when it is in contact with water.
Build-up of water can cause costly damage if it reaches the oil burner in your boiler. If you have water in your oil tank due to condensation, cracks in the tank or a missing tank lid it is advisable to fit one of our ‘water grippers’ to remove any water present.