Pennzoil Conventional Motor Oil is a traditional mineral oil base, fortified with Active Cleaning Agents to continuously prevent dirt and contaminants from turning into performance-robbing deposits, helping to keep your engine clean and responsive. In fact Pennzoil Motor oil cleans out up to 40% of sludge in the first oil change and keeps on cleaning into the second oil change*.
* Based on the severe sludge clean-up test using SAE 5W/30.