There is ash and there is ash. IH oil low ash oil virtually eliminated the calcium, barium and magnesium from their so called low ash oil. Another oil may be lower in total ash but not necessarily those three components which are the ones that leave hard, insulating deposits behind on valve heads, spark plugs, pistons etc. I scraped and chiseled a lot of carbon from those valve burners for many years and low ash oil, along with good valve guide seals and better piston rings really made a difference. A valve face covered with a layer of hard ash cannot cool properly so it overheats, sticks in the guide, torch's out etc. The spark plugs on those engines would build up that hard carbon and bridge the gaps under heavy loads. Now days, very few see heavy work and the plugs get built up with soft carbons from puttering around. I do not know what low ash oils on todays shelves actually contain or do not contain.
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Today's Featured Article - Old Time Threshing - by Anthony West. A lovely harvest evening late September 1947, I was a school boy, like all school boys I loved harvest time. The golden corn ripens well and early, the stoking, stacking,.... the drawing in with the tractors and trailers and a few buck rakes thrown in, and possibly a heavy horse. It would be a great day for the collies and the terrier dogs, rats and mice would be at the bottom of the stacks so the dogs, would have a busy time hunting and killing, all the corn was gathered and ricked in what we c
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