[rotorwrench]

A lot of old timers would put a drop from the engine dip stick when ever they checked the oil but I think I'd want some cleaner oil going in there. The Lincoln Mercury Overhaul Manual for the 1949 thru 51 models has it in the chart of the General Lubrication schedule. It states 10 drops of engine oil every 10,000 miles or 1 year (whichever occurs first). Oilers in that era usually have a wick in the portal to the bearing so the oil will stay there longer.