Pennzoil High Mileage is an advanced proprietary conventional formula with Active Cleansing Agents. Help prevent dirt and contaminates from turning into performance robbing deposits. What’s more, its specially formulated to help stop leaks from seals and reduced oil consumption in worn engines. Because at Pennzoil we now, a cleaner, well sealed engine is better protected and responsive. It meets or exceeds the engine protection required by API SN and is specially formulated to provide extra protection against the harmful effect of stop-and-go driving and high and low-temperature engine operation. Redesigned for the modern turbocharged engines- API SN Plus, API SN- Resource Conserving and all previous categories.