[SEL] question about oil engines

[Kangas, James G.]

When they refer to an engine like a Hornsby as being an oil engine, what type of oil does it burn? Is it what we would call fuel oil today like Kerosene or No.2 Diesel or is it some less refined petroleum product?
Also I read a brief description on how a Hornsby works and it mentioned that the oil was vaporized by coming in contact with a hot surface prior to combustion. Isn't this similar to a semi-diesel?
    Jim 



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