That's OK.
I'll try to answer in order.
No, I don't know what silicones are in the gel. The bottle states "a revolutionary blend of unique silicones that resists spin-off." I beleive they all say in so many words.
Yes, I did buff it with a terry cloth about an hour and a half after applying when I saw the rain coming. And the shine did come down a little.
I really didn't notice any sling today, but the car was so dirty after driving the wet highways last night.
It did apply fairly evenly but I still had to give a second coat to get areas that I missed.
I bought it a local Autozone.
I use the TW 2001
tire gel and tire wax. ( from $ store and big k).
I also use Megs
Endurance, both High gloss and low gloss. (Now those did sling off badly on my black car even though I buffed them the next morning, that's what made me go out a try others. So if anyone is interested in them...?)
I did not like EO tire gel. To me it was too much effort rubbing it on to get it even.
I've also used EF tire gel but loaned it out to a family member that misplaced it.

I REALLY liked that one.
But I try hard to find products locally and avoid ordering if possible.
Hope this answers you ?'s.
Take care everyone........V