10-15 mins tops. Long enough that I revved it a few times (5 or 6) and that was pretty much it.
The exhaust left a black mark on my moms garage. If you look, you would probably see it.
The coolant reservoir is tinted brown/black from oil (Im guessing) and it makes it hard to see where exactly the level is at (hot or cold etc.). From looking through the cap of the reservoir, I can tell that there is some in it, but it doesnt look like much. And doesnt look like it was green or red(orange like). If I had to guess the colour, Id say DARK green which I thought there was only supposed to be the Red coloured one in it.