API SN Plus Seal

Learn about API SN PLUS, the new motor oil specification for turbocharged engines and find out how Quaker State motor oils meet the new specification to help protect your vehicle. It’s just one of the ways Quaker State gives you more.

You want your engine to work as hard as you, and that means protecting turbocharged engines from Low-Speed Pre-Ignition (LSPI). Automakers are the driving force behind API SN PLUS, a new supplemental motor oil specification. Quaker State products with this designation protect against LSPI in turbocharged engines. Get answers to your questions about API SN PLUS and Quaker State motor oils.