other solid con-taminating elements. James N. Heald said that we have more cause to worryabout the oil problem than the fuel problem. There isonly comparatively little oil in a barrel of crude. A man-ufacturer of high-grade piston rings had told him thatby the use of his rings he had been able to… … 1152 AUTOMOTIVE INDUSTRIESTHE AUTOMOBILE June 2, 1921 class cylinder bore. The high-grade manufacturers aredoing this, but not the others. Boring and reaming, hesaid, do not produce a first-class job. In reply to a questionfrom Col. William G. Wall, Strat-ford said that there is little free carbon…
Automobiles · Aeronautics
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