What kind do you guys use and recommend? How about Z Max? Any body used that, and REALLY notice a difference? Otherwise, I'm gonna stick to plain old STP. Thanks.

 

Chevron Techron Concentrate is what I use.


Friend of mine just added ZMax a month ago and has noticed no gas mileage increase whatsoever. The point of all these cleaners is not to clean out gunk as much as it is to keep valves and injectors clean. If using injector cleaner results in a substantial increase in gas mileage, you've prolly been buying cheap gas.

 

Gumout Regane is also a good cleaner. Quite a bit cheaper than Techtron, which I used to use. Seems to work quite well (like Techtron). I mainly started using it because The Old One highly recommends it (Honda engine guru - guy knows his ****).

 

Gumout Regane is the thing to use. I used it in my two cars not too long ago. and the old one dose know his ****.

-Shing