With the late-model Kohler engines, yes they have called for detergent oil, but they always recommended non-detergent for the older K-series cast iron splash lube engines made 40+ years ago. Non-detergent oil in those engines is a big topic of interest in the garden tractor community.
Case IH...
Hey all. Long-time lurker but first-time poster. I apologize if I am beating a dead horse here, but I've been doing a lot of research (and have done virgin oil analyses on most of the major brands of HDEO available in my area), and still cannot come to a good conclusion. I would like to hear...