Whats The Finger Test?
With the radiator cool, remove the pressure cap and insert the index finger into the filler neck – rub the underside of the radiator tank. If your finger comes out dirty the system needs cleaning with REACTOR, a safe non-acid cleaner designed to remove rust, scale and muck from the entire cooling system. REACTOR’S container instructions are specific about draining: “Drain radiator by removing lower hose and flush block while warm.” This fast flush will empty the entire cooling system in a matter of seconds leaving it clean and scum free. Draining through the small petcock valve may, at first, seem more convenient, however, its slow drain leaves the inside surface of the cooling system similar to the sides of your kitchen sink just after doing a pile of greasy dishes. A cooling system requiring a cleaner is proof that the system has been neglected. Cleaners will often loosen rust, scale and lime deposits to reveal long existing weak areas of seepage and leaks. It is therefore recommende
