Quote:
Originally Posted by whitevette
This is old wive's tale # 37 ! From a machine's view, it makes little sense. All the lapped seals between the various metals depend on three things - 1) Do not over-heat or over-load. 2) Always provide a clean ( not "clear") lubricant. And 3) Do not abuse ( like your break-in procedure ). There is a definite difference between "lap-in" and "BREAK-in". 
Have one of them "nice days." |
Quite the contrary, that is actually very true. Race car and bike operators are always looking to squeeze the last drop of horsepower out of an engine, and if 500-1000 miles of gentle run-in on a dyno made 20 extra HP on a 900 HP engine, you can bet they'd do it. But it doesn't. A systematic method of high-load acceleration followed by engine braking usually yields the tightest, and longest-lasting engine possible.
And I know for a fact that stronger engines, all other factors aside, get better mpg when driven easy.
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