Originally Posted by zip439

You really need to get that car up in the air, drop the plastic shield under the engine and take a good look from the bottom. It is not uncommon for a leak to develop near or at the rear seal and anything from above will be seen from the bottom. That catalytic converter going bad is also a piece of the puzzle.

Originally Posted by joeyav

Hello,

Here is an old trick from my hot rod days. Take your vehicle out to a highway or a road to get the car up to 60-70MPH, then take your foot off the gas and let the car coast for about 10-15 seconds, then give it a lot of gas. If you have a problem with rings or better yet, valve seals, you will get a pretty good puff or cloud of smoke. When you take your foot off the gas the engine goes into high vacuum and will collect oil in the combustion chamber.
Best of luck!

Originally Posted by ZERACER

Was that perhaps before catalytic converters? The Crossfire has four.

Originally Posted by mikemadeit94

I know you said the valve covers are done, but did you put gasket maker on the other two smaller covers on top the valve covers? I just had to it as well..