Thanks. The reason I ask is that I just had my injectors, throttle body, etc cleaned along with new plugs, wires, UIM, LIM gaskets etc. My mechanic said it might be a good idea to treat a tank of fuel about once a month as good maintainence for the fuel system.
Once a month.....might be a bit much. At the most I do mine in the Spring time and then in Fall. That'* when the gas blends change here in Washington and the moisture contents in the fuel are the highest.
Most good quality 89+ octane fuel has stabilizers and treatments in it and you would just be running needless money through your gas system with the additional monthly additives. Now, if you notice a decreased in performance and during a plug change you notice some deposits, that would be the time to run the cleaner.
Been a big fan of BG44K, Lucas is good as well
What you have to watch out for now, vs older brands, is some have alcohol in them
That doesn't mix well with the newer gasses with Ethanol in them and releases the gum/varnish that build up over time plugging injectors
Usually a cleaner or tankfull of "quality" Premium gas every ten tankfull is enough to maintain good health