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Old 06-09-2015, 02:29 PM
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Ricky Bobby Ricky Bobby is offline
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Location: Wake Forest, NC
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^There are many reports of people who have bypassed the stock system on the M54 (Bimmerforums, E46Fanatics, Bimmerfest) if you read some threads which report increased mpg, and literally zero oil consumption, compared to a working stock system. There are still some who have replaced with updated Cold Weather CCV parts and report oil consumption. I will check mine out when I get home tonight, but I just changed my oil in December and have put about 3k miles on it.

This is the first vehicle I've owned where consumption of oil in between changes is deemed "acceptable" even on a fully working and operational stock system.

BMW put the CCV system on for emissions as far as I can tell and environmental factors, that is more important in my opinion and most likely in their eyes, than fuel efficiency.


Bavarian can you remark about your fuel and oil consumption since installing the "simple PCV" solution, and as well, if you have any perceptions of increased peppiness from the engine as I have seen elsewhere.
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