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An easy way to find a difficult-to-find oil leak is to use a smoke machine. You can get an Autoline pro smoke machine cheap and they work really well. Pull the dipstick and the smoke machine nozzle fits perfectly. You'll have to seal your intake so smoke doesn't go back out the intake and foul your MAF and air filter. I just pulled the intake tube off the throttle body stuck a sheet of bubble wrap between the throttle body and intake tube and it held in place well. Sometimes a visual inspection can be difficult if you have oil everywhere. With smoke, it's easy to find the general area of the smoke and you can use a spray bottle of soapy water to narrow down the exact leak location. Since your main leak is on the passenger side, it may be as simple as an improperly installed AOS or cracked plastic hose, which would be a vacuum leak and make your car run like crap at idle. Good luck!
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