Dipetane Fuel Treatment 5 litres DP005 Fuel Lubricant 5L 100% Hydrocarbon. Dipetane is the only 100% Hydrocarbon fuel treatment in the UK. It reduces emissions by up to 35% and smoke by up to 60%. Dipetane works in combustion which reduces the amount of unburnt carbon which builds up in the engine. Dipetane keeps EGR's clear and reduces carbon built up in DPF's. Dipetane reduces NOX by up to 35%. Dipetane is a fuel lubricant that goes beyond traditional fuel treatments. Dipetane cleans DPFs, valves, pistons, and injectors, helping your engine last longer. Our fuel additive also reduces emissions, positively contributing to the environment and helps improve fuel economy, saving you money.