Heavy Duty Full Synthetic

Full synthetic CK-4 heavy-duty diesel engine oils for severe on- and off-highway service.

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Product Catalog Heavy Duty Engine Oils Heavy Duty Full Synthetic

Heavy Duty Full Synthetic

Everstead HD Full Synthetic 15W-40 CK-4

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.

  • SKU: EHD-FS-15W40
  • full-synthetic
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Everstead HD Full Synthetic 5W-40 CK-4

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.

  • SKU: EHD-FS-5W40
  • full-synthetic
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