Pennzoil Motor Oil

America’s Most Trusted Motor Oil1 Helps Prevent Sludge and Other Damaging Deposits​ Pennzoil® motor oil is formulated with Active Cleansing Technology. At Pennzoil we’re committed to engineering motor oils that are proven to protect your engine. That’s why we fortified Pennzoil® motor oil to help prevent dirt and contaminants from turning into performance-robbing deposits, helping to keep engines clean and responsive.