This article originally appeared in Light Plane Maintenance, Mar. 2005.Elbow grease, grease the skids, greasy kid's stuff; grease makes the world go 'round -- literally. The earliest forms of grease were various and sundry animal extrusions and leftovers. Today still, numerous organically based greases give excellent service -- although their origins are more from lithium and calcium than bears. Synthetics have largely replaced organics in many markets, with wide temperature-stability being their biggest advantage.
Listen to this and you'll understand why hypoxia makes you stupid. More
Jack Fleetwood of Round Rock, TX leads the flight line in our latest edition of reader-submitted photos. Click through for more reader photography.