Hey guys, sorry to bring back a really old thread here - messaged Lui about this and he suggested I ask you guys. My car sat for about 1 1/2 weeks in extremely cold temperatures (was in the garage, but non heated), where things dipped down to -57 at one point. After a very rough start, car put out blueish smoke for about 10 seconds, then started with the really white stuff it usually puts out in the cold temperatures. Let it run for 10 minutes, came back out to look at it, it was purring and running normal fumes. Shut it off, turned it back on two minutes later (had someone do this so I could watch the back), and it went straight to normal fumes. I poked around the inside of the muffler with my finger, took some scrapping but I collected some black stuff, looked like oil but very watery, no smell of oil on it though. Put my flat palm against the tip, left a faint black circle, but did not smell of oil either. Same thing I imagine- the valves? Nothing to be worried about though? It's a 93 jspect auto tt by the way. Thanks guys.