So I drove the truck over to my grandpa's to change his thermostat in his pickup(5mi at most) it sat 30-45 min then wouldn't start cranked fine just wouldn't start- never happened before the only thing that changed was I put some Diesel Kleen(grey bottle) in before i left- I do know I over did it a little, came out of the bottle faster than I wanted it to- so left for an hour or so, came back changed fuel filter(needed done anyway) filled filter with fuel, topped tank off. cycled gp for about 5sec, truck fires right up. Is this IP heat soak or did I overdose on additive?