Pennzoil 5-Qt. 10W30 SN High Mileage Vehicle Motor Oil. It is formulated specifically for vehicles that have accumulated more than 75,000 miles. This oil contains active cleansing agents that continuously help prevent dirt and contaminants from turning into performance-robbing deposits, keeping your engine clean and responsive. It is blended to higher viscosity and lower volatility than conventional oils, reducing oil consumption due to burn-off. The special seal conditioning agent helps reduce leaks from worn or stiff seals. Pennzoil High Mileage Motor Oil actively helps keep high mileage engines clean, extends engine life, conditions engine seals, prevents engine leaks and oil burn-off, provides enhanced protection for worn engine parts, and reduces oil consumption.