[NC] consumo olio o sega mentale???

[Flex]

A supporto di alcuni aspetti di cui si scriveva:

Because PCV valves fail in different ways, no test will show all possible problems. For instance, the old test of shaking the valve and listening for a rattle, is only partially helpful. No rattle may show a stuck valve, on many designs, but the valve could rattle freely and still be bad.

Another definitive test is to remove the vacuum hose and look for fresh oil. A PCV vacuum hose, with oil dripping or a wet valve usually suggest too much flow, which causes oil consumption.
Checking the PCV vacuum hose is a wise precaution, on any engine that consumes oil.

Anche le tubazioni sarebbero quindi da controllare:
Even original equipment hoses sometimes give problems. This is common on Ford and some Mazda vehicles. The hose chosen is not adequate for the task and after miles of use collapses. When this occurs, flow in the system stops and the hole in the hose may create a vacuum leak. Inspect all hoses in the PCV system and replace any that appear soft, swollen or collapsed.

http://www.agcoauto.com/content/news/p2_articleid/197