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Extra protection for vehicles over 75,000 miles. Rejuvenates seals and gaskets. Helps stop engine leaks, noise and smoking. Contains zinc anti-wear agent ZDDP. E-Z flow bottle. Suitable for all seasons. Scientifically engineered for high-mileage vehicles using conventional or synthetic oils. Seal Swell Agent: Helps stop engine leaks, noise and smoking; helps reduce oil consumption. High-Quality Base Stock: Carrier of active ingredients to help protect internal engine parts. Viscosity Index Improver (VII): Cushions engine parts to help reduce metal-to-metal contact. Zinc Dialkyl Dithiophosphate (ZDDP): Anti-wear agent that helps provide a layer of protection for engine parts. 100% satisfaction guaranteed or your money back. Questions or Comments? Visit www.stp.com or call 1-888-GO4-STP1 in the USA. Made in USA.
Add 1 bottle to 4-5 quarts of oil at or between oil changes.
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