I have being using the biodisc for up to two years to energies my water,treat my toe pain make uncooked sliced vegetable like 'ugu' to stay fresh for three days without refrigerating it and so on. But I never new it could work wonders on fuel until I tested it on my neighbours fuel by spraying the fuel keg with the biodisc2 energised water then leaving it for three hour before pouring it into his small tiger generator. After one week I went to meet him he told me that he use to buy fuel every three days but one week after he is still using the fuel is it not amazing that the creator of the biodisc 2 DR ian lyon is wonderful .if you are in doubt and want to buy it call 08036875271