In the YTmag Articles section is an article entitled... "What Oil Should I Use?" by Francis Robinson He states that ND-oils should be shelved and to use modern oils. Even if you do not rebuild and put in new seals. Also he states that straight Mineral oil is the best they had 50 years ago and that the modern trans-hydrolic oils are better to use. That the modern oil would have been specified if they had existed. Sooooo . Now I do not know what to do. Is Francis knowledgable or full of it? I would like to hear what Big Dean and RayIN have to say as well as others. Below is a section of Francis Robinson's article. "I keep seeing this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. ...the lubricants called for in most old tractor manuals were simply the very best recommendations they could make at the time of manufacture and many of the products we have available today just didn't exist. Had todays products been available then, not only would the manufactures have recommended them, they would have been thrilled by todays quality. "Can I use detergent oil..."? Of course you can ! ... Very early detergent oils had a few problems but those were eliminated over forty years ago. ALL four cycle engines in normal use today should be running with detergent oil. ... Non detergent oils belong in your oil can. The detergent helps to keep the contaminates in suspension in your oil so they drain out when you change oil. ...I changed all of mine(Trans-hydrolic oils) years ago to the newer "universal trans-hydraulic" oils which are compatible with such lubes as Massey-Ferguson "Permatran" or John Deere "Hy-gard" and many others. ..."
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