Mobil 1 M1C-451 Extended Performance Oil Filter (Pack of 2) Provides long-life performance for todays longer drain intervals Effectively removes contaminants, with a 99.6 percent Multi-Pass Efficiency Rating and an advanced synthetic fiber blend media Holds double the contaminants versus the leading brand, with 28.0 grams of total capacity Withstands nine times normal system operating pressure, for exceptional protection up to 615 psi Prevents dry starts by eliminating internal leakage during shutdown through the use of a silicone anti-drain back valve (where required by OEM)