i diluted it as directed for vinyl and it came out great... 10 to 1 I think. Not sure it needs to be full strength after the results I got. I figured i could always use it full strength if I didn't like the diluted results.
Also it dried the heck out of my hands which made me put a double thick coat of 303 on afterwords out of worry that it would dry out the vinyl. I dont know that you need to do that.