[masraum]

I lived about a mile from a Chevron station for years. I'd heard a lot of good about Chevron and Techron, so I went to that gas station pretty religiously (it helped that it was super convenient). At some point after several years, I noticed that my vehicle was pinging. I changed to a different vehicle and then rarely noticed any pinging. I then switch to a third vehicle, and noticed that vehicle started pinging. I was running low on gas and had to full up at a super-cheap gas station like racetrack or something like that. It was, at least, a new station. That's when I noticed that my car stopped pinging when I filled up with the gas from another station. I'm sure Chevron is good gas, but I stopped using that particular station. I don't know if they had crappy tanks full of water or they weren't dispensing 93 octane or what, but I never went back.

I'm using a Chevron again, but mostly just because it's the most convenient station for me. This one doesn't seem to be causing any issues.

I figure the quality of the tanks and station is more important than the additives.