Pennzoil 550016921-6PK Platinum 5W-30 European Ultra Diesel Synthetic Motor Oil - 1 Quart (Pack of 6) Pennzoil Ultra full synthetic motor oil is specially designed to provide ultimate engine performance and protection for race tuned engines Provides oil stability and endurance under extreme conditions - heat, load and speed for protection against viscosity and thermal breakdown Seeks out and dissolves contaminants safely into the oil before they form deposits in the engine Helps to prevent the build-up of sludge, damaging deposits, corrosion and engine wear Extremely low chlorine content Advanced full synthetic motor oil Motor oil weight: SAE 5W-30 Cleans out engine sludge better than conventional and synthetic blend oils Better for severe driving conditions than conventional and synthetic blend oils Exceeds the most stringent car manufacturer requirements for cleanliness and protection