The "common wisdom" when detergent oils started becoming popular (after WWII, as I remember) was that you should NOT put detergent oil in an engine that had been run for a long time with straight oil. Supposedly, the detergent would loosen up all sorts of stuff that had accumulated in the oil system. Don't know if it is true, but my father--an avid reader of auto mechanics' journals--used to tell me this. I am assuming that you know all about impulse couplings, making sure they are set (easy to forget when the coupling has to be set manually), etc., and that you know that pushing DOWN on a crank is a great way to break your arm. My father had his arm broken cranking a Ford, when he tried to spin it to get better spark (the Ford mag, on the flywheel, had no impulse starter, so the juice got better when you spun the engine faster). An impulse starter won't give you any better spark from spinning the crank, I think. The spin given to the mag after the impulse trips is pretty good, and would probably give a better spark than you could get by spinning the engine without the impulse (ouch!). When I used to crank these beasts (10-20, F-20, "Regular," F-12, Oliver H-P Row-Crop), I always retarded the spark for extra safety. I still don't know if this retarded the spark beyond what the impulse does. Hope I'm not telling you what you already know, but I just wanted to add these words about safety.
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Today's Featured Article - Trenching With a Plow - by Staff. Introduction: This interesting information came from one of the discussion forums here at YT. We thought we should place it up front so it could be read by anyone interested in putting old iron to work. [Editor] I tried something new today, and it worked so well I thought I should post it - in case it might help someone else. I'm running 100 yards of 4" drain pipe from the gutter downspouts of our house to a pond down the hill. This should hel
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