Posted by Jacks on May 20, 2018 at 20:28:50 from (72.218.81.234):
In Reply to: Briggs Stratton oil posted by Ih10020 on May 20, 2018 at 19:15:06:
The oil in an air cooled engine can reach over 300 deg F in normal operating conditions. Oil in liquid cooled engines is in the low 200 deg F range in normal conditions. This according to a technical paper on small engine oil published by Amsoil. Over at the "Bob is the Oil Guy" site somebody shot an oil filter external temperature with an infrared thermometer and measured 350 deg F after a difficult mowing job during hot weather. Seems like the oil sold by Briggs and Stratton and also generic brand small engine oil sold in stores is 30w. I find that most all small engine oil requirements call for 10W 30 in winter conditions. I own and operate a wide variety of new and older small engines. I have used both multi viscosity and 30W oil over the years and have never had an oil related failure. Having said that, small engines air cooled engines can be harder on oil than a large diesel or gasoline liquid cooled engine. I have reduced oil consumption in several older air cooled engines by running 30w compared to multi viscosity oil. Koehler and B&S have both stated this fact in their operators manuals over many years. Amsoil now has a small engine synthetic oil that achieves both a 30w and a 10w-30 rating without the use of viscosity modifiers. This means that the viscosity will not degrade under typical high oil operating temps, and the same oil could be used year around if necessary. If I had had this oil in my new B&S generator it probably would have saved me from snapping the pull starter rope when I tried to start it with 30w oil at -10 deg F last winter.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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