Berryman B-12 Chemtool and Chevron Techron fuel injector cleaner…
'90-96 Fuel Pump SystemView all 81
Fuel Additives
These are what I use when I think my gas trucks need some fuel system maintenance. B12 is very strong & volatile, so I only add it when the tank is cold (early morning) immediately before a long drive (so it circulates before it can evaporate), and it can also be used in the engine oil to remove deposits (but it CAN remove them so quickly that they clog the filter, so be cautious on engines with thick deposits). Techron is less-aggressive, but contains more beneficial components. In my 4.9Ls, I may also add some Marvel Mystery Oil (MMO) to the gas & oil as a top-end lube since they're more prone to valve stick with unleaded ethanol-diluted gas. MMO is a milder crankcase cleaner than B12.
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