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Additives for API CK-4 Formulations

40 CheMost components used in oils targeting API CK-4 · Detergents & TBN Boosters · Ashless Dispersants · Viscosity Index Improvers

What API CK-4 Demands of an Oil

API CK-4 is the current heavy-duty diesel engine oil category (2016), protecting modern low-emission diesels with EGR and exhaust after-treatment. It raises the bar over CJ-4 on oxidation stability, aeration control, shear stability and protection against bore polishing and wear — so CK-4 formulations lean on robust detergency with TBN reserve for acid neutralisation, ashless dispersancy, antiwear and antioxidant chemistry.

CheMost supplies the additive components a blender uses when formulating an oil to meet API CK-4. The category approval itself is held by the finished-oil marketer, not the additive supplier — the grades below are the chemistry that goes into such formulations.

Components Used in API CK-4 Formulations

Real, documented CheMost grades whose data sheets cite use in oils targeting this specification. Open a product for full technical detail, or request a sample.

Formulating to API CK-4? Tell us your target.

Give us the specification, the oil type and your base oil, and our technical team will recommend the components and treat rates, then send the TDS, SDS and a sample.

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