Last year I tried it on a whim. It was on sale at Amazon at the time, and I took advantage of it.

Today I see it on sale in the Amazon.com gold-box offer and thought I'd share my experience.

I noticed increased fuel efficiency and power when I poured it into my old Jag. Granted I don't get much MPG with it as is, any amount of increase is easily apparent just by looking at the odometer and fill-up time.

Don't ask me how it works, but it did what it said it would do and noticeably so.

A couple of observations. The fluid / formula is the same in all formulations, the only difference is the volume per bottle. For example the power steering fluid could easily be used in your gas tank, and in your motor oil.

If you have a newer car (within the past couple of years), reports show that it didn't make much of a difference.

Give it a try and let me know how it works for you!