Hi folks Im back in the 6.0 game after buying back my old 6.0 from my pops. Im going through and servicing everything and am on to oil selection. Id always ran T6 5-40 in it and told my father to continue to use that. However I now work at a Deere dealership and get parts at cost. We carry Plus 50-2 oil. Is there any risk of running one that is ck-4 rated but not cj-4? How about the non full syntetic that is rated for both?