By Mike Anderson, Senior Editor | September 28, 2010

ConocophillipsVarious API CJ-4 diesel engine oils from ConocoPhillips are now compliant with all new Caterpillar engine crankcase fluid specifications, both for pre-2007 and new models. Previously qualified as Cat ECF-3, these oils were designed for use in 2007 or later model engines equipped with diesel particulate filters and catalysts for exhaust after-treatment. ConocoPhillips API CJ-4 products now approved as compatible with ECF-3, ECF-2 and ECF-1-a specs are Guardol ECT, Fleet Supreme EC and Kendall Super-D XA. Since then, ConocoPhillips announced the upgrading of 76 Super Diesel to API CJ-4 quality.