When it comes to basic car maintenance, changing your oil and filter is number one. Oil protects your car engine from damage and keeps it running smoothly, so it’s important to have a premium oil filter to keep that oil clean. PurolatorBOSS Oil Filters have a double helix center tube for better oil flow and filter strength. And with SmartFUSION^™ synthetic media, PurolatorBOSS can help stop your car from leaking oil for up to 20,000 miles.