Originally Posted by Valley101
My take on this is, if Toyota/Lexus thought this was necessary it would be included in your maintenance schedule, so they could make a few bucks on it. Use the recommended gas from branded gasoline and you should not incur any problems.
Agree 100%. But remember, Toyota/Lexus settled a class action lawsuit due to sludge and Toyota was a founding member of Top Tier gas:
(look at history)
Fuel system cleaner for cars that were NOT typically fueled with Top Tier has benefits. Toyota and Lexus do not recommend routine fuel injector cleaner since in theory, you should routinely be using Top Tier gas.
BP did not join Top Tier originally because they thought it was just a way to decrease warranty claims
but like Costco, they are now Top Tier gas suppliers....
So my recommendation is the same. If you use top tier gas, no additives are necessary. If you did not use top tier gas, running a bottle of Techron Concentrate will provide a noticeable improvement. (say at 25k worth of miles). For severe build up (say 50k worth of non Top Tier gas), then running two bottles back to back might make sense. If you have less than that, it may still help but the difference may be more subtle.
Once you clean it, you don't have to keep doing it if you use Top Tier gas (which now includes cheap stuff like BP, Arco, and Costco).
Just my two cents. If I'm wrong, you're only down $7. But if I'm right and the Fifth Gear people are right (see that Youtube video), you recover a lot of performance for not a lot of money.
(But you don't have to take my word for it).