And of course Castrol “R” is totally biodegradable too, and not toxic at all ! The only trouble is that if you inhale too much of the smoke or oil mist it has a strong laxative effect, as the pilots of WW 1 incontinent rotary engined aircraft soon discovered. They quickly became as incontinent as their engines… but I don’t know how it got from their lungs into their digestive systems. Perhaps it was a combination of the castor oil mist and not having a parachute that gave them all the trouble.
Merry Christmas to all.
