It's either Top Tier or it's not. There's no different grades of TT.I have always used top tier gas, but even the top tier gas here in California isn't that great.
Are you seeing a richer mixture with clogged injectors or... ?I check the fuel trim. a $5 elm does the job. I've only used injector cleaner once and it was on a ford ranger because the trims were off. Dumping cleaner all the time or worse at every tank is a waste. I've gone 315k on my suv never using a cleaner once and just cheap Walmart gas.
The secret is that i just burn the 32 gallons of gas out in 1-2 weeks. I implore people who have efficient cars that don't drive much to just have a weeks worth in the tank. Cars that go a month with the same gas will varnish out fast after just a few years and that's why some have issues but simply keep less gas in there.
Yeah if the trims are off by like +/- 5% then a cleaner can be used but mine were at 1-2% on my suv, most I've ever seen it was 3%. On the ranger i used to have it was at adding 8% and did have a slightly off idle. Two bottles of regular techron in one tank of regular sorted it out. Went down to 2 and the idle sounded a bit more consistent.Are you seeing a richer mixture with clogged injectors or... ?
It's either Top Tier or it's not. There's no different grades of TT.
That is a great question. I did check for codes, there were none. I drive so many non stop miles back and forth from FL to PA and use so many tanks of gas that the problem was obvious. I normally get 17-18mpg and it dropped to 13 and was slightly rough in cruise. I stopped at Walmart and dumped in the Techron. It was not long after that the issue was solved.How do you know that wasn't an environmental issue, or maybe bad gas? I've never used any of these products myself, and if dirty injectors are suspect, I send them out for ultrasonic cleaning. The gasoline should have all the cleaners you need, and as expensive as it is already, I'm not spending the equivalent of another 25 cents per gallon to use them.