Castrol GTX CK-4 15W-40 Diesel Motor Oil 1 Gal (3-pack)
Diesel motor oil with piston deposit protection and sludge control. Designed for severe service including towing and high temps; includes anti-wear and detergent additives. Customers note good quality and value
Highlights
- piston deposits protection
- sludge reduction
- high-temperature endurance
Pros
- piston-deposit protection
- sludge control formulation
- anti-wear additives
- detergent protection
- suitable for severe service conditions
Cons
- no explicit viscosity range in description
Best For
Features
- Protects against piston deposits and engine sludge formation
- Controls oil thickening and valve train wear with detergents and antioxidants
- Designed for severe service conditions including towing and high-temperature operation
