Fuel system cleaning machines?
If your car has been sitting a while, say over the winter, or you rarely drive it, then maybe a good idea.
Look at it this way, either you clean it with the pressure and chemicals all at once, or gradually with in-tank injector cleaners. Kind of the old ouce-of-prevention vs. pound-of-cure thing. Usually, hard core fluid flushes are to correct neglect. But if you treat it a little bit over time, stays clean.
Get a $6 bottle of concentrated injector cleaner and use that as an excuse (at work or home) to take a nice long road trip (1 tankfull please
Just my 2 bits,,of wit



