Lucas fuel treatment has an excellent rep my friends that run parts stores etc swear by it and so do many ppl I know that use it too.
Hope that helps and best of luck.By the way I use it too and once you use it don't panic if any engine codes appear bec it can cause o2 sensor codes to appear and then go away just be sure that once you use it and run a few tanks of fuel to change the fuel filter on it.