I think that Chevron makes the best for cleaning/lubing the injectors. It has Tecron in it that really seems to be the market favorite. With the standards of gasoline delivery and tank status at the stations, this Chevron stuff is cheap insurance to protect your injectors.
Chevron Techron is the only additive I’ve seen referenced and approved by factory service information.
Agree completely. I'll add a couple of bottles of Techron to a full (36 gal) tank around every 10k miles before a road trip just to clean things up. Right now, Autozone has 'em on a buy-one-get-one free deal, so I've stocked up 6 bottles.
Might be purely psychological, but it always seems to run smoother and quieter after a tankful, and 1-2 mpg better. 'Course, only done it twice now (currently at 26K miles), but it does seem cheap insurance just to keep the innards clean and happy. And until I see empiric evidence that another product is superior, no reason to change. Probably will pull a few plugs at ~30k miles just to see how they're doing.