gtechniq c5 wheel sealant

For people that have used this, how many wheels can be treated with 15ml bottle?, I need to seal 12 alloys. Also can it be used on satin black alloys?.
 
I had a little sup left after 4 wheels. I don't see why you couldn't use it on satin black as its just a protective coating.
 
G/techniq state it can be used on matt paint so satin shouldn't be an issues. If in doubt sign up to detailing world and ask on there as the guys that run the company ate regulars. As for doing 12 wheels that might be a stretch.I did 2 coats on my wheels and still have a little bit left, maybe enough to do another wheel possibly two with 2 coats.
 
Ok, cheers guys, looks like I may have to go for the larger bottle then.
May have to try an inside area of the satin wheels first, just didn't want it to put a sheen on them.
Also when you say you did your wheels, do you mean all of it?, does that include the inside of the alloy, or are we talking just the face.