Simple-minded people used to say 'we paid to put the lead in and now we're paying to get the lead out'. The fact was that higher octane fuel was required for higher compression engines and the cheapest way to increase the octane of gasoline was to add tetra-ethyl lead to it. When lead was outlawed it became necessary to increase the octane rating of gasoline without using lead. This was a more expensive process. I remember when we were still flying aircraft with recip engines. Military was using 115 octane gas (115/145). That gas had so much lead in it that our fingers would end up with a layer of white residue from all the lead whenever we came in contact with it. Some of the smaller engines ended up with lead fouled spark plugs. Looked like someone had soldered the points together. Hiller had to change the way they lubricated their transmissions with engine oil (a bad idea in the first place) because lead was fouling the Borg-Warner overrunning clutches. We had to add TCP (Tom Cat Pee) to those little engines' fuel to prevent lead fouling. All because of low bids for gasoline supplies that met govt specs.
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Today's Featured Article - Identifying Tractor Smells - by Curtis Von Fange. We are continuing our series on learning to talk the language of our tractor. Since we can’t actually talk to our tractors, though some of the older sect of farmers might disagree, we use our five physical senses to observe and construe what our iron age friends are trying to tell us. We have already talked about some of the colors the unit might leave as clues to its well-being. Now we are going to use our noses to diagnose particular smells. ELECTRICAL SMELLS
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