MIRACLE fuel additives that promise more kilometres per litre, cleaner engines and less pollution are as old as fuel itself. Such claims are often vague and rarely proven. But now a British firm says it has developed an additive that makes diesel burn more efficiently, producing fuel savings of 10 per cent. And the UK’s largest bus operator is running large-scale tests to find out for itself if the claims are true.
The diesel additive, called Envirox, has been developed by Oxonica, an Oxford-based spin-off company from the University of Oxford. It consists of tiny particles of cerium oxide, which…
