Modern Fuels Require Modern Fuel Hose. Installing Barricade protects the system against the aggressive fuel mixtures of today's modern fuels, which can degrade basic rubber hose and result in customer comebacks. Plus, with Barricade, you can be assured that you are complying with permeation laws, and providing your customers with the best hose available – all while being environmentally-friendly. Carbureted engines (pre-1985) and small engines. EEC/EGR, air pump, PCV valve, charcoal canister. Lowest permeation rate on the market 15 gr/m2/day. Multi-fuel compatible: Approved for use with leaded and unleaded gasoline, diesel, biodiesel, E-85, 100% Methanol, Ethanol and gasohol fuels. Performs 5 times better for permeation than the nearest competitor.