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Q. Why can't I use a CI-4 Plus engine oil in an engine that calls for CJ-4?

March 7, 2013

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A. Engines produced after 2007 are equipped with diesel particulate filters that require the use of CJ-4 oils. CJ-4 oils have been formulated to provide optimum compatibility and durability for DPFs. Using CI-4 Plus oils can shorten the service life of the diesel particulate filter, leading to higher maintenance costs or even replacement of the DPF.

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Mark Betner

Lubricants Expert

Citgo Lubricants
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