No, don't use it. It's horrible stuff that will not work and grind your R9 into metal shavings.
I'll do you a favor and take it off your hands. Ship it all to me ASAP. I'm such a nice guy I'll even pay shipping. I can;t let you use that junk on your R9, so I'm willing to pay you to ship it to me to make sure that does not happen!
HAHA! Actually, it's great stuff. Use it lightly, you don't need much.