With fuel & oil mixed together in the crank case, it was important that the fuel didn't dissolve the oil, & ruin its lubricating qualities. Pharmaceutical quality castor oil was the answer, , it could stand the heat & centrifugal force, & its gum forming tendencies were irrelevant in a total-loss lubrication system. [ the oil was pumped out of the cylinders during combustion, & not returned to an oil reservoir. When you realise practical powered flight only began in 1909, things were fairly experimental.
Pilots ingested a lot of oil during the flight, and suffered from persistent diarrhoea. The scarf the pilots wore, was used to wipe oil off their goggles. Nothing to do with large man in the car park, but I wouldn't worry, you could outrun him. But his rabid dog? [they all have dogs, or at least they used to, up that way, ] Bob![]()



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