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Old 02-08-2011, 01:43 PM
MRV99 MRV99 is offline
Officially Welcomed to the 'Fest
Location: Chicago
Join Date: May 2007
Posts: 1,118
Mein Auto: 2011 M3 DCT
BMW has had a moisture issue with the CCV valves for many years. The main contributor to this issue is the way BMW has designed the oiling systems(for high RPM) compared to the way that American drive the cars(low rpm). From what I have read in the Bimmer and Rondel the daily commute and not really getting the car running at temp for an extended time. The longer they run, the less this is an issue. Another issues is the fact that many people do not run there engines at high RPM's which really help clean the oiling system out. You are not going to hurt these engines by running them up to redline. Now if you do this when the engine is not up to temp or say keep it at redline for 5 minuets, there may be some long term damage but standard redline runs will not touch it. These engines are high rpm engines and love to run at high rpms so don't worry. Besides, I have build engine 1/2 as nice as a BMW and have put tons or Redline runs and the engine was not damaged.
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