Opinions on new vehicle break-in period

It is interesting to note that at the end of this long discourse that is counter to everything you have every heard that he tries to sell you something before you hear the rest of the story...

Basic automotive engineering... The engine break in period is to enable the engine to gradually rise to thermal stasis. That means you shouldn't get it hot too fast. Neither should you rev the engine too high, too soon, because the lubricated parts; such as piston rings, rod bearings, crank shaft bearings, cams, valve seats and etc, need to be "worn in" gradually. So, go ahead, rev that sucker up to 4000 or 12000 rpm and blow everything.

Likewise, all the gear train mechanisms, such as differentials, pinions, anxles and so forth need to be "worn in" gradually. That's so each gear can develope it's own wear patterns. That's also due to lousy manufacturing quality control. You can either take the time to "break in" these parts, or you can add sawdust to the lubricating grease later, when the seals start to leak and the differential sounds like a rock grinder.

Remember: The two most common elements in the universe are Hydrogen and Stupidity.

mabar proclaimed:

This was folklore long before Tim Berners-Lee had his "aha!" moment. If you wanted a sports car engine that would run with lower internal friction, you were supposed to run the thing to the redline on every full throttle shift--repeatedly.