Well, after 'stockpiling' (50 quarts) Valvoline VV966 for use in the Diesel Jeep and Sprinter, I learned that Valvoline 'cleverly' changed the specs but kept the same Part Number (formerly Valvoline Advanced MST 5w-40, that had MB 229.51 'approval'...) and the 'new European formula' lost the MB approval according to the BeVo listing. So my question is, can this be used in my ancient Dodge with the 5.9l 24V Cummins Diesel? It isn't driven much and would at least see annual oil changes, or if it happened to hit 3000 miles, at that interval. Thought maybe I could add Lucas ZDDP additive to 'fortify' the '5w-40 European Formula'. I would appreciate any constructive advice A lot of great info here. I have learned much. Thanks.