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From the "Way too much info Department"
Closed crankcase venting systems (CCV) are a US Federal emissions requirements from the 70's as part of the requirements to capture the evaporation (venting) emissions (began in the late 60's for CA vehicles). They require a manufacturer to reduce the output of engine combustion vapors, gas evaporation, etc. The test is a vehicle in a plastic bag. Every year this capture requirement level was raised throughout the 80-90's. Before then everything was vented to the ground. Welcome to US DOT emissions regulations, now Euro and hence worldwide. See India and South America for non compliance. Gee I wonder if those vehicles had a different system due to no country mandated regulations required?
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2005 X5 4.8IS
The Blue ones are always FASTER....
Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green
Last edited by StephenVA; 12-15-2016 at 07:16 PM.
Reason: Found a technical article
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