Especially in that old beaver I fly all the time. I keep a can of opened oil here on my desk in front of the little fan just so I feel at home when I'm flying. When I was in Alaska taking a ride in a Beaver a few years ago, the guy actually picked up a can of oil under the seat, punched it and poured it into a little tube that was right there beside the seat. I asked "do you do that often?" He said, "Only when she needs it." Oh me.
D