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Originally Posted by mdh
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As far as other people having 'drive it like you stole it from day one', and other websites that advocate running the engine hard to break it in, they are simply wrong. If you talk to anyone who really understands engines, especially the ones who design high volume production engines designed to last hundreds of thousands of miles, they will all agree with my posted break-in rules.
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Or they recognise that modern manufacturing techniques and oil technology mean that surfaces no longer need to be bedded in, and therefore find bedding the rings in a more important process. One that a soft break in fails to address???
Quote:
Originally Posted by mdh
Oil analysis from break-in periods shows a very high amount of metallic particles in the oil. That's because the whole process of breaking in the engine involves wearing the mating surfaces as evenly as possible and avoiding any deep scoring of either surface. If you run the car hard before the oil has warmed up, you risk damaging these surfaces, compromising the fit between piston and cylinder, and burning oil.
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Yes, 99% of the particles found in the first oil change is swarf from the machining process, or sand from castings.
As long as you're happy with the way you've run it in all's good, ETTO.