1999 Toyota Avalon with 278k. 2001 Subaru Forester with 168K. I still use top tier gas from Costco or QuikTrip. Very old cars...but run great because of my OCD, that's why I use a can of 44k once in a while. Might just be speculation, but I think it could keep the CAT clean and prolong the life of the the A/F ratio and downstream sensors too.What is the year/make/model of the vehicle(s) you are using the BG44k in?
Mileage?
And what prompted you to begin to use it?
The questions aside, using a quality fuel system cleaner once a year is probably a good interval.
I’d prefer top tier gas on a fairly regular basis to keep the injectors happy versus an “annual cleanup.”
Yeah, just use Top Tier and forget about the additives.
You might want to rethink that...
You might want to rethink that...