Anti-friction
I have read a lot of stats on Microlon, and yes they are very impressive, and the product was/is not all that cheap. One of the readings on the product, quoted, (may be an urban myth) an owner of a C-182 who wanted to test the product on his near T/X motor. He produced a dump sump to exit all his engine oil, this is after doing all the required runups and instalation of the product, dumped the oil in flight, and continued a circuit flight for 20mins. No ill effects or measurable wear on the motor. Myth or not?
Personaly I use 750ml of wyns anti friction to a sump of oil, and and 50ml of upper cylinder lube to a tank of fuel in my J1Auster (Cirrus Minor 2 motor). Smoother running, and I am of the opinion that todays fuel is too 'dry' for the older type of engines.