ATV TRAIL MINERAL 4T ENGINE OIL WITH RUST DEFENSE SYSTEM IS A PREMIUM MULTI-GRADE MINERAL ENGINE OIL FOR THE UNIQUE DEMANDS OF ALL 4-STROKE ATVS, QUADS, AND UTVS. EQUALLY SUITABLE FOR AIR-COOLED/LIQUID-COOLED 4-STROKE ENGINES. THE SPECIALLY DEVELOPED RUST DEFENSE SYSTEM COATS INTERNAL ENGINE COMPONENTS PROVIDING UNSURPASSED RUST AND CORROSION PROTECTION. UNBEATABLE ANTI-WEAR CHEMISTRY ELIMINATES WEAR, EXTENDING ENGINE LIFE.