You can do a lot of things really with the old tractors and be just fine. Often whats called for in the book is 30w engine oil. You can still purchase that or do 10w30 Diesel engine oil would give you the same performance at running temperature and flow better at cold start. This is what most of the old gas tractors get for oil around here. 15w40 in most modern diesels and even the diesel 4020 gets that although it probably would say 30w in the book. The generator tractor gets a 0w40 diesel oil from caterpillar. If I had the money Id put it in all the tractors because it cranks beautifully at 20 below and still has the higher high temp viscosity to run at a warmer temperature in the summer. It also doesnt seem to leak from seals much for a synthetic. The real answer is its unlikely to affect how soon a rebuild is needed and oil is like peoples religion in that they stay with it till the grave so you might as well just pick one and run with it and not lose much sleep over how correct a choice you made.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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