Heavy Duty Full Synthetic

Full synthetic 15W-40 heavy-duty diesel engine oil for on- and off-highway applications. Formulated for excellent wear protection, soot handling, and oxidation stability in late-model and older engines, with strong TBN retention for extended drain use where supported by OEM and oil analysis.

Full synthetic 15W-40 heavy-duty diesel engine oil engineered for excellent wear protection, shear stability, and high TBN retention for extended drain intervals where supported by OEM.

Premium full synthetic heavy-duty diesel engine oil designed for modern low-emission engines and mixed fleets. Provides excellent wear protection, soot control, and cold-start performance while supporting extended drain intervals where approved.