Lead and its affect on valve seats is much over worried about and talked about. The only situation where one might see its affect would be on an engine that runs long hours, at high loadings, high rpms, narrow seats and high spring pressures. Otherwise there is no reason to even think about it. Many moons ago I worked at a quarry where they were talked into switching to Dexcool under the quise that it would not ruin bearings if it got in the engine oil. Starting in about year 2 they were loosing radiators to rot as quick as I could get them recored which was a mystery until the guy at the radiator shop told me to get rid of the Dexcool. I wouldn't give Dexcool to an enemy.
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Today's Featured Article - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
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