some of the stealerships dont carry brue's and they are getting harder to find, these are sent right to you house. if the ulsd fuel causes an injector failure under load and you burn a piston and valves it's going to cost more than the additives everyone should be running. champions and autolites are definates to stay away from, but bosch and brue and dieselrx, i've had no issues with and have not had a plug stick in the head (not saying it dosen't happen ) just hasen't happened to me in 15 years of running these idi trucks. it's a machine and parts fail, it always costs when you have to fix them.