This thread repair kit came with everything but a handle (T-grip) to set the tap into when driving it in. The tap itself is the second one from the left.
The driver side of the tap seems to be 8 mm square:
The instructions say nothing about needing a special tool for the tap:
Which tool can I use to drive this tap? Also, the kit didn't come with cutting oil, which I didn't think would have broken their bank to include. Is it really needed? I am cutting threads in an aluminum engine block.
You don't need a handle, but it would surely make it easier and keep it more square to the hole. Use a socket which fits over it and will hold it (I don't know what size that'd be, but you can easily fit one). There are also triple square sockets which come with quite a few socket sets. You might try one of those if you have it. You just need to ensure the tap is perpendicular to the work so as to not cut the hole at an angle. It isn't hard, you just need to pay attention to what you're doing.
As far as cutting oil, it depends on where it's at. If you're not worried about where the cuttings go, use WD40 or even engine oil. If you are worried about it, use grease, as it will not only work as lubricant, it will pick up all of the cuttings as well. Just pack the flutes of the tap with it, then clean them out A LOT (never go more than a full rotation without cleaning out the grease and putting new grease back on).
