[jcp123]

Any type of fuel system cleaner is good to run now and then as a preventative measure. The shop next to the parts store where I live has seen a massive increase in failed injectors and especuially fuel pumps of late, and it seems like we sell a lot of fuel pumps to other shops. When they open them up, they find exceptionally hard, very resistant black clumps. Break a clump open with a hammer and it has a crystalline structure - sugared ethanol deposits, we theorize. Once it hardens like that, even an overnight soak in Berryman B12 can't touch it. I've started to recommend eithe filling up at Chevron because of its Techron, or running some kind of injector/carburetor/fuel system cleaner every few tanks as a preventive measure.

Personally, I like Lucas' product, as it includes a lubricant that others dont. It's easier on the fuel pump and any gaskets.