Getting water in you oil tank
Over time you can get a build up of water in your oil tank. If your lid has been damaged or left open, you can get rain water in your oil tank. Changes in temperature also produce condensation inside the tank. Oil-fired cookers and boilers can be effected by water being in your oil tank, so it important to know how to spot it.
The problems with water being in your tank only begin to show when the water touches the seals of the tank. Initially it will sit under the oil when it first enters the tank.
You can purchase some water detection paste to see if there is water present in your tank. The paste will change colour when it comes into contact with water. It is available in both red and green.
To check for water in your oil tank, apply some of the water detection paste on a stick and gently place it inside the tank until it hits the bottom. Leave it for approximately 30 seconds and then carefully take it out of the oil tank. You will know if water is present in your tank if the paste has changed colour. The depth of the water will also be indicated on the stick. If the stick has dots on it then water is held in suspension.
If you have any difficulties in checking for water in your tank, your central heating engineers should be able to assist you. They can also organise to have the water removed from your tank.
To ensure that all the water is removed, you should change the oil filter and flush the boiler feed pipe. Dependent on your expertise, this is perhaps an action that ought to be carried out by facility engineer.