Back in the days before catalytic converters and unleaded fuel, there was a fair amount of engine repairing happening. I was there. Open up an engine that has been run for any length of time on leaded fuel, and you will see buildup of deposits. They will build up in the oil pan, any return passages in the block, the valley in a V-type engine, and every other little crack and crevice. Today, if you open up an engine, you will find it CLEAN!! As a matter of fact, I noticed this by the time unleaded gasoline became mainstream. There may be some carbonization of the oil, and in some cases some sludge, but nothing like in the old days.
Bottom line: lead is BAD for an engine. Period. Take it from one who has done major engine and transmission work all of his life.
Also note that Amoco has been selling unleaded gasoline for a very long time. Like back into the 1930s if I am not mistaken.
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Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
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