Just threw in a bottle of Chevron Techron concentrated fuel formula ($8.99 for a bottle) with my recent refuel. Noticed several changes:

(1) Idle is smoother (less vibration)
(2) Cold start is not as noisy
(3) Getting about 2 more mpg

So far so good.

 

Porsche has recommended Techron for ~20 years....

 

Lucas fuel injector cleaner...THE BEST IMO

 

+2
Lucas Tune-Up In A Bottle/ FI Cleaner is great stuff!!!

 

Redline system and f/i cleaner its my favorite !

 

I'm not too keen on fuel injector cleaners. How often should we use it and is it only for old cars or good for new cars as well?