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 - Old Abe is Still Making Hay - by Jeremy Sweeten. Things have changed a bit since my last article. I am now almost finished graduate school at Purdue University. I am still in Agronomy, but specializing in hay and forages. My wife has survived two years of marriage to a part-time farmer. The equipment line up has changed a bit too. The DC has retired to
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