Berryman 1210 Engine Oil Extender for Gasoline and Diesel Engines, 10 oz

Berryman Products 1210, Engine Oil Extender, 10 oz. Super-premium engine oil additive formulated to extend the life of all in-service gasoline and diesel engine oils by up to 50%. Berryman engine oil extender should be used regularly for engine maintenance to reduces friction and wear, for help in preventing deposit formation, and providing start-up protection. This oil treatment should be added to your crankcase when you’re about halfway into your regular oil change interval and then “reset the clock” on the oil. For conventional motor oils, we recommend adding it at 1,500-2,500 miles after last oil change and driving another 3,000-5,000 miles. For synthetic motor oils, we suggest using it 3,000-4,000 miles after last oil change and driving another 6,000-10,000 miles. This engine oil extender offers substantial overall improvement in lubricant performance. The Berryman Engine Oil Extender is compatible with ALL single-grade and multi-grade conventional and synthetic oils for both gasoline and diesel engine. Treats 3-6 quarts of oil.