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Old 02-28-2013, 01:35 AM   #255
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Originally Posted by BlueFocusSE5 View Post
Again, when the oil system loses it's prime when an oil change is done the resulting engine start has zero oil pressure, allowing metal-to-metal wear to occur. This is why some people take the care of priming the new oil filter, to try and lessen the damaging effects of a no oil pressure/dry start situation, which is very wise. If this wasn't an issue, people wouldn't bother to prime the oil filter.
Yes priming the oil filter can prevent initial/temporary rod knock. That didn't seem to be what you were saying initially. Saying oil changes themselves are more damaging is a bit of a misnomer. Poor oil itself the biggest damage to an engine especially if not filtered properly or if it loses viscosity. The damage from a proper oil change versus a cold start will be negligible.
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