Well, I am about 140 miles (mostly highway) into the second tank in a row with the Chevron injector cleaner added in. Both tanks full were mostly highway, which they suggest for the best cleaning, so the current injectors are probably about as clean as they are going to be.

I would love to report how things are going, but the outside temps have been in the mid to upper 40s all week (it is 55 degrees at 2:30 pm on Feb 8)), so I really don't know if the improvement I feel is because of the warmer temps or the injector cleaner. We are suppose to get back into the low 30s for highs towards Sat for a week or so. Maybe I will have something to report then.