Rislone 4747-12PK Super Concentrated Octane Booster, 6. Fluid_Ounces, 12 Pack , yellow

This is a very good octane booster but I'm very disappointed because you cannot buy just a six pack anymore where they did on purpose so I'd have to start buying 12 packs but it is a really wonderful product that won't will not ruin your cat a lot of converter turbo or any plastic parts in your vehicle wonderful octane booster just I wish you would make smaller packages please

my 408 Dart engine likes this stuff

This really works. I absolutely love this stuff, because I get an extra 2 to 3 mpg per tank using it.Unfortunately, as the price continues creeping up and up, the sellers, or the manufacturer, or someone out there needs to realize it's becoming more and more likely that I'm going to reach for the "Super" pump. When the cost starts to negate the benefit, I'll stop using this, and start using the 93 pump instead.Luckily, the last I ordered, it was still under $40 for a 12 pack. That was less than 2 months ago. Now it's almost $50. I can't recommend it as highly as I once did because of the price increase.

Use this in my tuned vehicle. Way cheaper than runner 93 octane here. Was getting some spark know on 87, but add a bottle of this to every other tank full and no spark know.

Fast delivery . Thank you!I use this to maintain octane of stored gasoline ⛽️ . Seems to help for a year or more of storage!! Cheap insurance for my fuel investment!!

Two in my stable supposedly demand premium fuel. With the cost differential being up to a dollar per gallon for premium, both cars, both high-performance, high HP motors do fine on this stuff and 87 octane fuel. I use about a full bottle per full fill-up, a half bottle for my typical half-empty fill-up. It's my guess that the engine electronics are retarding timing a bit to eliminate knocking but both have way too much HP for my usual needs.Bottle could be designed better for partial fill-ups, say like Sta-bil does with its.

seems to keep mc. respond good

I added this to my 1986 Porsche 944 turbo with the boost that has been turned up to double from factory, and the results are amazing! I added this to the 93 octane shell that I normally use in the car and it is like a rocket. I highly recommend for any turbo car!