The Metals Handbook is the latest edition, written in the last 5 years. The SAE papers referenced at the end of the 3 chapters include papers written in the last few years on the subject. As we say in the science biz, the data doesn't spoil with age. The data and conclusions are drawn from scientific studies by the folks that design, manufacture, and test engines and lubricants for a living. Folks like Ford, GM, Lubrizol, etc. Despite what some may believe, engines work just about the same as they always have - the science and engineering haven't changed significantly.

But hey, if you guys think a lumberjack from the North woods is a better source of information because he uses a chainsaw for a living......well knock yourself out.

Captainjohn:
You are correct about engine wear being greatest during startup. The reason is for a pressure fed oil system, there is no hydrodynamic lubrication of the journal bearings on rods and crankshaft when there is no oil pressure at startup. The bearings see boundary and mixed lubrication which causes higher wear. If you had an electric oil pump / preoiler on your car engine and could get the oil pressure up before you started the engine, the journal bearings would NEVER wear out. They might corrode away eventually, but not wear away.

For a 2 stroke engine with premix oil and gas and all rolling element bearings, things are a bit different. Rolling element bearings require no break-in. They are good to go after being manufactured. The only thing we need to break-in are the ring, piston and cylinder wall fit. And the best method for that is described above.