Description
Convoy 15W-40 CK-4 is formulated for all heavy-duty diesel engines including EGR diesel engines with exhaust gas after treatment systems. Convoy 15W-40 CK-4 provides optimum protection for engines requiring 15W-40 with API service category CK-4 and is backwards compatible for previous API service specifications including CJ-4 and CI-4. The enhanced synthetic
base oil provides both superior cold temperature and high temperature properties. Convoy’s additive package is specifically formulated to address the severe demands of a diesel engine’s internal environment. Its stable TBN additive package neutralizes damaging acids produced during the combustion process and will not rapidly deplete.
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