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 - The David Brown Rose Badge - by Samuel Kennedy. In the 13th century civil war was raging in England. Two English noblemen were involved in a conflict which became known as the War of the Roses. The Duke of York had as his emblem a white rose and the Earl of Lancaster had a red rose. Today the white rose is the official emblem of the county of Yorkshire and the red rose has been adopted by the neighboring county of Lancashire.
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