Techron (it actually works)
I thought I'd just drop a quick note...
I added a bottle of Techron to 1/2 a tank, as my car has slowly developed a vibration at idle. Thinking it was most likely the motor mounts and not dirty injectors, I was skeptical.
After driving it in heavy Minneapolis traffic the last few days, the motor is noticeably smoother.
I never had much faith in "snake-oil", but this one worked in my case.
Happy New Year!