[Pokeguyjai]

Hi Guys,

Just got back from Cold Tire Domination HPDE at NJMP and I had to cut my day short due to a very smokey exhaust at start up. Still had a blast though!

A little background:Car had 1800 miles on it, oil change 1000 miles ago at 800 miles, Royal Purple 0W-20. I have not pushed the car anywhere near the level before today. Car has no forced induction, just Perrin intake and exhaust and a tune from EFI.

Today:

-I ran two sets of ~6 laps, with a break inbetween for other HPDE groups. We had lunch and I started my car and a big puff of smoke poured out from the exhaust. My instructor saw it from the garage about 25 yards away and he thought "someone was BBQing." Stopped the engine and a minute later restarted, a smaller puff of blue smoke came out.

Checked oil dipstick and the levels looked fine.

Turned the engine over again 1 hour later and another puff of blue smoke, and also noticed smoke coming out of the exhaust (like what you get from a cold start but less) which smelled like it was burning engine oil.

- Drove the car back home and my friend who was tailing me told me that he didn't see any more smoking coming from the exhaust. Drove for 10 miles and we stopped for gas and when I started the car there was no smoke at all.

Drove the rest of the way home (2.5 hr drive) Let car settle for ~20 minutes as I wrote this post and I checked the oil dipstick again and the levels look fine.
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I'm planning to take the car to a Subaru dealership. I travel a lot so I don't have much time for a back and forth with them in trying to diagnose the problem.(coupled with the fact that I have a distrust for dealerships) I would like to get an idea of what the potential issues could be.

The general consensus from a few instructors there was it could be a bad PCV valve. Any other ideas would be greatly appreciated.

Thanks in advance!