Pennzoil Platinum Full Synthetic is designed to maximize engine protection and is backed by a 15,000-mile protection guarantee to protect your pursuit of every mile. Made with natural gas, it is formulated for complete protection for top engine performance. Pennzoil Platinum offers cleaner pistons (based on Sequence IIIH results; does not apply to SAE 0W-16 or Pennzoil Platinum Euro motor oil), helps protect engines from loss of power, delivers better fuel economy (based on the latest industry standard), provides unsurpassed wear protection (based on Sequence IVA wear test using SAE 5W-30), and provides excellent performance in extreme temperatures.