Craggs Energy RangeKlene is a specifically blended additive for AGAs and Range style ovens, which can be added to Kerosene Heating Oil to maximise the fuels potential. RangeKlene prevents the formation of carbon deposits and sludge occurring in your tank which keeps the fuel fresher for longer as well as reducing maintenance issues with your boiler. The additive can be simply poured in with your Kerosene. For best results, pour the contents of your bottle prior or during delivery. One bottle can treat up to 1000 litres of Kerosene Heating Oil. This bottle of RangeKlene does not need to be used all at once, simply replace the lid and store in a cool, dark place away from children and sources of ignition.