Rotella T4 10W-30 CK-4 is a synthetic blend technology heavy duty diesel engine oil. It has been formulated to provide Triple Protection technology against wear, deposits and oil breakdown, plus provides a fuel economy benefit. 

Uses advanced additive technology plus synthetic base oil to protect under the most severe engine conditions found in modern, low-emission engines. Recommended by a wide range of OEMs, suitable for both the latest low-emissions and older model equipment.