|
Alan, My manual is dated March '53 and recommends 20w for temps up to 90� F then switch to 30w. When it gets like tonight, that is below 32�, the manual says to use 10w. It goes on to say use the same oil in the Powr-Trol you're using in the engine. If it stays below -10� F for long periods, the manual specifies 5w. My manual is moot on the subject of detergent vs. non detergent oils. If someone has steadfastly used non detergent oil for the last 50 years and you switch to a detergent oil, you should be prepared to drain and replace the filter every 3 to 5 hours until the crud is cleaned out. You may cause a few oil leaks the built up crud has been sealing in the process. It seems to me there have been some advances in petrochemical engineering over the last 50 years, so I use a 10w-30 synthetic formulated for older engines. Others will say using anything but 30w non detergent direct from the crude will lead to eternal damnation. Guess we'll see; but for the time being I'm comforted by finding no such reference in scripture. Don't know of any reason to use detergent oil in the "Powr-trol" (it's spelled that way in the manual) except that non detergent is not readily available within 10 to 15 miles of here. I use a straight 20 weight, and things seem copacetic. Probably the best favor you can do your MT right now is to order a owners and a service manual from JD. Think of it as cheap insurance to keep yourself from making expensive mistakes. Best of luck with your new tractor, Steve
| 
