1/4 of generator failures are fuel related, with a further 80% of fuel tanks considered to be 'at risk' due to fuel contamination. In addition to fuel contamination, your tank could be causing further issues due to sludge, grit & rust. As a result, it is sometimes necessary to clean your tank, as well as your fuel.
Kingspan's deep cleaning process for tanks occurs after the fuel is removed & safely stored. It has been developed to remove all sludge, organic matter & other impurities from the inner surface of the tank, which is then thoroughly rinsed & dried before the fuel is put back in.