No but I'm not sure about Racine but GB only has 91. There is one place with 93 but it has 10% ethanol. This stuff isn't just an octane booster though. That's why I was curious if it was just snake oil or if it was just a relatively unknown product.
Most likely snake oil. Just "plain" gasoline if given half a chance works well to keep the engine clean. 'course, half a chance means that the car will need to be driven some distance (my experience is 40/50 miles) at freeway speed. But the engine perks up after. But this was with a car with some miles on the engine. My experience with another previous car with two turbos (from the factory) and my Hellcat and my Scat Pack and even my M-B cargo van (with a turbo charged engine) is the fueling is much more precise and the engines appear to run cleaner. Thus an extended drive appears to have no benefit.
Also my experience with using Chevron with Techron in one engine -- the same one above with the "miles" on it -- perked up after not even using up a tank of Chevron Supreme after months of a steady diet of Shell V-Power.
But with my other car with lower miles and the two turbos didn't react one way or the other. Again I attribute this to lower miles and better fueling. The turbo charged engine and the Hellcat engine came with wide band O2 sensors.
For my Hellcat and my M-B van and my Scat Pack I did and do fuel with 91 and 91 ethanol free. I couldn't/can't tell the difference.
I have not yet found any place around that sells 93 from a pump so I have not yet had a chance to learn if 93 makes any difference with my Scat Pack or M-B van.
If you believe the engine needs more octane give that 93 a try. The 10% (more like 7 to 8%) ethanol won't matter. The 2 extra points of octane will. Maybe.
Regardless I'd leave the fuel additive on the shelf.
bndautomotive.com
