A couple of little additions for you, the locknut key may also be in the space saver kit somewhere (where you find the tyre) and sometimes in a little compartment behind a door in the side of the boot (trunk) why there are so many places I don't know. The only tyre sealant i have ever seen work is an industrial brand one, it's not a thin gel like most and actually resembles tar, you pump that stuff in and it will seal a large hole up to about 30psi, also great for sealing tyres on to the rim, also it can be cleaned off for patching. I will remember the trade name I can only remember calling it the black stuff and black magic. Most older european cars have a scissor type jack that is 99% of the time painted black, the trick to using the crank here is to turn the handle at the bend, it's just easier. Also your fears about the jack are a sensible point to make, I actually know an owner who got a rather large chip in his shin bone when the jack pinged out. If the jacking point allows you putting the jack diagonally minimizes risk to you and still gives you good access for the actual jacking... Last point is carrying an extra piece of sturdy steel bar in the space saver is generally considered sensible, idiots at places like kwik fit alway use the air gun and even if you weigh 300lbs those nuts wont move with that little leverage, just slide the bar over the handle and it saves you alot of effort... By the way I was a tyrefitter for three years so... meh Which reminds me, if you have anything heavier than a normal saloon car I suggest finding somewhere for a cheap trolley or bottle jack, a pickup truck is best with a bottle jack, the extra lift makes life easier when you get stuck on a curb or the jungle...