CaseIH Low Ash oil for all our Cadets. I've heard folks at the parts counter swear that their K series burned much less oil using it as opposed to regular
30W. Besides, if that extra $2 is gonna break me.......
Now of course dad had a Deere with an 8hp Kohler in it once that would drop a 1/2 qt every two hours. No mosquitos when you mowed the yard with that one. I don't think Low Ash oil would have helped it