Whatever oil you use it is important to use a low ash oil in those engines to extent exhaust valve life. Diesel oils generally have a high ash content because the ash is used to neutralize the acids formed in the crankcase by the sulfur residue from the fuel. On the 656 gasoline engine the high ash oils will leave carbon residue on the valve stems that will cause them so stick open when the tractor is put under load. When that happens it will burn out the valve just like using a cutting torch on it.
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Today's Featured Article - On the Road with Dave Gohl: Deere Departed Friend - by Dave Gohl. Have you ever had to part with a dear friend? It's not easy. If it's due to death, your feelings could be in disarray for days, months or even years. Even now after almost 4 years, I still miss my dad. I remember when I was a kid my dad sometimes would tuck my brother and I in at night and we would ask him questions about his childhood on the farm. To this day, it's some of the best stories I've ever heard. And now, I'm so glad that I asked those questions, and if I were a little smarter i
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