An easy and cost effective way to reduce the problems caused by diesel bug, the Fuel Harmonics Fitch Fuel Catalyst is simply suspended in a yachts fuel tank. You will need six units for a 100 litre tank, which will provide a ‘fit and forget’ solution and prevent damage to the engine, as well as possible fuel blockages. This will reduce maintenance bills and therefore pay for itself in no time. They also reduce emissions, increase efficiency and prevent the smelly smoke problem often associated with diesel bug. They work for both diesel and petrol and at £24 a pop are well worth it for peace of mind alone.