Yes, I recommend AMSOIL Fuel P.I. The reason you should use a fuel cleaner is because over time carbon will form on your valves, combustion chamber, and the head of your fuel injectors. Decreasing power, fuel economy, and performance.
Some manufacturers don*t recommend them and some do. You*ll have to consult your dealer.
〉 Answered on Jul 28th, 2008 by Donna Burmeister, Service Manager at Classic Nissan
Personally I'm not impressed by the fuel additives. If you really want to have this service done, I would recommend going to the dealer and having a top engine fuel cleaning done.
This is not added into the tank, but a process which connects directly to the fuel rail and runs top engine cleaner through the engine. Much more efficient.
You may want to do this every couple of years, depending on how your engine is running. When they do this service you also need to change your oil afterwards. Hope this helps.
〉 Answered on Jul 28th, 2008 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines