Again, Slime does nothing to help road tires, unless your willing to limp home with about 60 psi in the tire after a flat. Like I said before, the high pressure of road tires prevents the Slime from sealing even the smallest pin hole once pressure exceeds 65 to 70psi.
Also Slime tubes use the worst presta valves I've had the misery of using, they lasted about 6 or so attempts to pump before the valve would fail...and I don't mean clogging, although they would do that, but I mean the valve would actually break. I've never had this problem with any other presta valve.