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Message: <blockquote data-quote="RossA81" data-source="post: 1579173" data-attributes="member: 10984">I have a 60k mile 95 Cobra with a Vortech V-1, stock short block, edelbrock heads.  I have owned it for about 2 years.  None of the work was done by me.  It has always made a weird screeching noise that continues for a few seconds after you shut the car off.   The noise would start once the car was fully warmed up.  I never thought much of it, while it was a little annoying, the car is loud enough that I did not really notice it.Yesterday I finally figured out that it is the sound of air trumpeting past a gasket somewhere(rear main? oil pan? intake? all of them?)   While the car was idling I pulled the dipstick and air was coming out somewhat forcibly.  Next I took out the PCV valve and fired it up.  Noise, and dipstick air both stopped.Current setup has been (stock) PCV valve in lower intake where it belongs, breather(with one way check ball) on oil fill,  the "nipple" on the fill tube has been removed and the hole welded shut.  FWIW I had a breather on the fill tube without a check ball when I got the car and it made the same noise(And idled high)Car does not smoke out the tailpipes, and does not coat plugs with oil.  But tt has been consuming oil.   It mists out the valve cover breather pretty good under boost.  I am at a bit of a loss.  I fear the engine is hurt.   I am tempted to just delete the PCV system for now and put a baffled/vented catch can in the passenger side fenderwell.  I do not drive the car often, I have put around 1500 miles on it since I bought it.  Thoughts?  [ATTACH]46933[/ATTACH]</blockquote>