Motor Oil Guide for Common Rail Engines with Diesel Particulate Filter (DPF)

Kubota Engines equipped with a Diesel Particulate Filter (DPF) must use CJ-4 Service Category Engine Oil or damage to the DPF will occur. For information on the Engine Oil Service Categories see the American Petroleum Institute website. Please consult your Kubota engine Operator’s Manual for engine specific information on the Engine Oil maintenance and API recommendations.

API Engine Oil Service Categories