Microgard Oil Filters provide good engine protection using conventional motor oil for everyday normal driving conditions such as city and highway travel. Recommended for traditional oil and filter change intervals, typically 3,000 to 5,000 miles. Laboratory Test Performance per ISO 454812 13 grams dirt (Microgard MGL51515), 95% efficient at 29 microns (Based on Microgard MGL51356, MGL57060, MGL51515).