John ..... back in the 80's I used to subscribe to several motorcycle magazines, and those writers knew their bikes. They did an experiment with two brand new Kawasaki 4-cylinder street bikes. Both bikes were ridden by all members of the test group over the period of a year or two and ridden under all conditions and ridden both hard and easy. One bike had regular oil and filter changes, whatever was recommended by the manufacturer. The other kept the original oil and filter. Both bikes received regular other maintenance and small fixes to keep them on the road and of course, had the oil topped up a bit when needed. At the end of the test and maybe 50,000 miles, they tore both engines down and did all sorts of measurements for wear. Bottom line is that there was not a whole lot of difference between the engines in the two bikes. I'd love to track that article down.
Meanwhile, some of the claims that people make about oil are off the charts. This oil is great andthis one is crap is nonsense if they have the same basic rating IMHO. Sometimes a person will tell us that a differrent oil changed an oil-guzzling monster into one that never used a drop of oil. Some claim they ruined six engines and then switched brands and never had a probem again. I'm very sceptical about those kinds of claims, I just flat out refuse to believe it.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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