Reduces friction drag between moving parts & helps keep engine clean. Frees sticky valves, lifters & sticking oil compression rings by dissolving deposits. Contains JB Metal Conditioner®.
Add one bottle (14 fl oz.) to 4 to 5 quarts of engine oil. Can be added in between or at oil change. Do not overfill the crankcase. Justice Brothers Engine Tune-Up will not void new car warranties.
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