Posted by 37chief on September 30, 2018 at 14:11:06 from (70.181.182.143):
I have plenty Shell 15-40. I use it in all my diesel motors. I am changing oil in my pressure washer with Honda GX390 13 hp engine. The manual says not to use multi grade oil, just 30 wt. So that is what I will do. Is there a reason not to use multi wt oil in this engine? Here is what happened to me 15 years ago. I used 15-40 oil in my Allis Chalmers 4 cyl. gasoline motor. It didn't take long for my motor to lose power. One piston seized. On a 60 year old motor I would think it has plenty of clearances. I cleaned up the piston, and wall. It has been fine since I switched to straight wt oil. I have no idea why the 15-40 oil did what it did. Any thoughts? Stan
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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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