IT'S MORE THAN JUST OIL. IT'S LIQUID ENGINEERING.

Q: Do you have a Diesel Truck? A: If yes, then you want Castrol Tection Extra. Superior protection versus leading diesel engine oils.* Unique reforming molecules that help actively resist oil breakdown to deliver unsurpassed protection against permanent viscosity loss. Long lasting protection from metal-to-metal contact, protecting your engine from wear and extending engine life. Highest level of detergent content to neutralize the increased level of acids generated by modern diesel engines. Leading anti-oxidation performance to fight sludge build up and preserve engine efficiency. * Based on shear stability and engine wear.
Q: Does your vehicle have over 75,000 miles?  A: If yes, then you want Castrol GTX High Mileage. Provides superior protection against oil burn-off... 17% better than leading conventional oils* Specifically formulated to meet the changing needs of vehiles with over 75,000 miles. Contains seal conditioners to help reduce oil leakage. Helps extend engine life in higher mileage vehicles. * NOACK volatility test of leading 10W-30s.
Q: Do you want performane and protection?  A: If yes, then you want Castrol Syntec. In torture tests Castrol Syntec 5W-30 maintained maximum horsepower longer than the leading conventional 5W-30. Delivers stability and endurance under extreme conditions (heat, load, speed) that cause conventional oils to break down. Proprietary additive package neutralized corrosive particles, preventing them from grouping together and forming power-robbing sludge. Superior engine protection outperforms leading conventional and synthetic-blend oils.
Q: Do you take frequent short trips?  A: If yes, then you want Castrol Syntec Blend. Specially engineered with proprietary Castrol GTX Technology and Castrol Syntec molecular components to provide superior short-trip protection.* Exclusive formulation provides unsurpassed protection against engine wear. Additional stability and protection against thermal breakdown compared to conventional oils. Protection against harmful engine deposits. * 5W-30 and 10W-30.
Q: Do you want conventional oil with superior sludge protection?  A: If yes, then you want Castrol GTX. Superior sludge protection.* Ultra-low friction to improve gas mileage.** The highest North American standard of protection against viscosity breakdown. Unsurpassed protection against thermal breakdown. * In 5W-30 and 10W-30 grades only. ** In 5W-20, 5W-30 and 10W-30 grades.