Fat Cat by GLD Products Fat Cat Valve Oil, Pink, 1 PACK The Fat Cat valve oil is a long lasting, odorless, petroleum based oil This oil will keep your valves from smoking during those fast, "hot" licks Your horn will really be able to keep up with you Fat Cat Fat Cat Valve Oil Fat Cat Valve Oil is ultra-refined petroleum oil that chemical tests have shown to have fewer impurities than other popular valve oils Fat Cat's viscosity ("thinness or thickness") is similar to other "fast" oils but works better because of its purity