Use entire bottle of ProTecta Engine Treatment in engine crankcase where you add your motor oil. Good for all vehicles that require 4-5 quarts of motor oil. Refer to vehicle owner's manual if uncertain of motor oil quantity required. On larger pick up trucks etc. that require more than five (5) quarts of motor oil we recommend using GASZOL for gasoline engines and D-SOL for diesel engines found under the products section of our website. Call for technical assistance.
On subsequent oil changes use ProTecta Engine Oil Booster, or you can use the ProTecta Engine Treatment.