I found that sharkhide kicked the shine down a degree or two, but on harder to reach places (like the valve cover) it was great as those parts are harder to get on and off - one application and you're done. I didn't know the stuff came in can, good to know.
I've lost more 10mm sockets than I've bought. It's a Bermuda Triangle type deal. I think 10mm nuts were invented purely so that 10mm sockets needed to be too, then sold, then lost by the shitload - all in an Illuminati-conceived plan to upset the moral order and civil code. "Breed disturbia in the garage" they said, "and New World Order will be ours".