From "The Big Book Of Airplanes" (courtesy of my three year old) the pilots would warm their astronaut style tubes of food by holding them against the windows, the engine would expand by 8-10 inches from heating, and the fuel tanks didn't seal until expanding, so they spewed fuel during takeoff and the early flight stages...

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'84 300SD veg-oil bliss
'83 300SD veg-oil beater