WIX Oil Filters provide excellent engine protection using conventional and synthetic (when recommended by the OE vehicle manufacturer) motor oil for normal and severe driving conditions such as dirt roads, construction sites, stop and go traffic, short trips, interstate travel, throughout the OE manufactures recommended oil and filter change interval. When applicable, WIX silicone anti-drain back protects against dry engine starts past the traditional filter change interval. WIX filters are recommended for OEM oil and filter change intervals. Laboratory Test Performance per ISO-4548-12: 18 grams dirt*, up to 50% more than Protec, 99% efficient at 23 microns** (Based on *WIX 51515 **WIX 51356, 57060 and 51515)