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Old 08-14-2015, 08:39 AM   #41
JFP in PA
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Join Date: Feb 2005
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Quote:
Originally Posted by thstone View Post
With the above being said ^^^, I understand that my experience is not representative of all engines.

However, in reality, doesn't the oil that goes thru the bypass get filtered the next time thru? Even if the bypass was permanent, isn't the turnover rate high enough such that it wouldn't take long for all of the oil (and all of the contaminants) to have passed thru the filter?

What I mean is first pass, 20% unfiltered. 2nd pass 20% of the first 20% is bypassed (0.04%). By the third pass, 20% x 20% x 20%, only 0.008% of the oil is unfiltered. Very quickly, the amount of unfiltered oil approaches zero and any new contaminants are also quickly filtered out in only a handful of turnovers.

Or am I missing something?
Problem remains that as long as there is any bypass, particulate matter is getting fed into the main oil galleries feeding the rods and mains; which is never a good thing.
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