Fuel Filter Funnel – Racor RFF Series | Australia & New • 2-cycle oil contains detergents, which will allow water to pass through the filter screen. In this case, the only safe way to filter out water is to add the 2- cycle oil to the tank after filtering the fuel through the funnel. Additives containing alcohol are made to emulsify and bind water to fuel. The filter cannot remove this bound water. Buy Online - Mr Funnel Australia Mr Funnel - F1 C SMALL Conductive FUEL FILTER FUNNEL. DIAMETER 8.9 cm The Genuine Mr Funnel 50 Micron fuel filter that REMOVES water and debris from hydrocarbon. Ideal for home lawn mowers, motor cycles, go-karts, generators and all domistic purposes. REMOVES WATER, dirt, sand, rust and debris from contaminated fuels.