FRAM Extra Guard Oil Filters deliver advanced engine protection for everyday drivers who perform routine oil changes at OE (original equipment) recommended intervals. The Extra Guard Oil Filter PH5 for select Cadillac Chevrolet GMC and Hummer vehicles is engineered with a proprietary filter media blended of cellulose and resin. This FRAM filter is the perfect balance of dirt-trapping efficiency and dirt-holding capacity and is designed for use with conventional or synthetic motor oils. No matter what you drive or what motor oil you use FRAM has an oil filter for you. Protect your vehicle s engine with a FRAM Extra Guard Oil Filter today!