Lucas Oil 21178 Synthetic SAE 5W-40 CK-4 Diesel Motor Oil – 1 Gallon / 3.79 L

The Lucas CK-4 Synthetic SAE 5W-40 Diesel Motor Oil is a premium heavy-duty engine oil formulated with high-quality API Group II and Group III base oils and a cutting-edge additive package. Built to withstand the demands of modern diesel engines, this oil delivers robust performance, excellent wear protection, and improved fuel economy.

With outstanding oxidation stability, soot control, and high-temperature protection, Lucas CK-4 oil extends engine life while reducing maintenance needs. Perfect for commercial trucks, heavy-duty equipment, and diesel-powered vehicles, it ensures engines run cooler, cleaner, and longer.

✅ 1 Gallon / 3.79 L jug – ideal size for diesel oil changes
✅ Synthetic SAE 5W-40 CK-4 formulation – modern heavy-duty standard
✅ API Group II & III base oils – premium durability & stability
✅ Cutting-edge additive system – protects against wear & deposits
✅ Excellent oxidation resistance & soot control
✅ Improves fuel economy while protecting engine life
✅ Designed for modern diesel engines – trucks, rigs, and equipment

For reliability, endurance, and maximum engine protection, trust Lucas Synthetic SAE 5W-40 CK-4 Diesel Motor Oil.