A clean sweep in synthetics.
*Based on ASTM Sequence IIIG piston deposit test using SAE 5W-30. Does not apply to Pennzoil Ultra™ Euro, Pennzoil Ultra™ 0W-40 and Pennzoil Platinum® 0W-20. Pennzoil Ultra™ keeps pistons up to 25% cleaner than Mobil 1; up to 20% cleaner than Valvoline® SynPower®; and up to 40% cleaner than Castrol® EDGE® with SYNTEC®. Pennzoil Platinum® keeps pistons up to 8% cleaner than Mobil 1; up to 17% cleaner than Valvoline® SynPower®; and up to 20% cleaner than Castrol® EDGE® with SYNTEC®.