The 6.0 injectors are fired off of high pressure oil and not high pressure fuel like the 6.4. So no you wont see results like you will on a 6.0 or even a 7.3 (even the 7.3 wont see much results because their injectors lack spool valves unlike the 6.0)
Its specially formulated to clear gunk build up left by non synthetic oils off the spool valves on the oil side of the injector and keep them lubricated, this aids in better starting because it allows the spool valve to function much faster like it was intended to without any stickage (called stiction)...
Using it probably wouldn't hurt though. Sell it to a 6.0 guy or give it back to him
Now if youre talking about Rev X's Distance + fuel additive USE IT, its by far the best next to Optilube's XPD formula. Better lubricity and better mileage, and knowing your fuel system is much better off.