Sulfur is is not a good lubricant. In fact, it's too caustic for most engine metals. Zinc, in the form of ZDDP is best for resisting cam spalling. Some of the 'high mileage' or 'vintage car' oils have ZDDP levels of 1100 or 1200ppm, and are good for flat tappet and roller tappet cams, where the spring pressure is significant.
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Today's Featured Article - Search For Spares - by Anthony West (UK). Following on from the aquisition of the old Fordson F, I was very much in need of spares. As a novice though I didn't appreciate the fact that there were so many Fordson tractors made, that all the other makes seem rare by comparison. As far as I was aware a fordson was a fordson and it was only through trial an
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