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Reviewed in the United States on February 24, 2025
WORKS PERFECT AND YOU CAN TELL DIFFERENCE BUT YOU MUST KEEP USING IT EVERY TIME YOU PUT FUEL
Carrie
Reviewed in the United States on February 15, 2025
This is a good deal. I use this regularly in my car because I travel a lot. The case was fine but 2 out of the 10 bottles weren't sealed properly therefore leaked all over the package
Randy822
Reviewed in the United States on August 3, 2024
I used Sea Foam for years but tried this upon a recommendation and it has increased my gas mileage by almost 2 miles per gallon!
Shawn D
Reviewed in the United States on August 17, 2024
This stuff really works. I could feel the car running better. The cleaning properties of this stuff is powerful. I am very pleased with this product.
brian ewing
Reviewed in the United States on July 6, 2024
Was reading about gas directed inject engines and I trust Royal purple products and for the price was better than some of the other ones that were recommended says to use every 3,000 I'm just going to use one every oil change between 5000 and 6,000 small price to pay because you never know what fuel you going to get
PamTaylor
Reviewed in the United States on November 9, 2024
Great stuff. We use only Royal Purple on all our vehicles for years. Nothing but the best!!!
sylvia j daugherty
Reviewed in the United States on October 2, 2023
I had rough Idle issues with my 2019 Pacifica (80,000 miles). Ran tank down till low fuel lite came on. Put two (2) bottles of Royal Purple Fuel Additive in tank a gas station, just prior to (20 Gallon) fill-up. By the time I got down to half a tank of fuel, my rough-idling issue was gone. I'm a believer in this stuff. HINT... If you have one of these "newer" vehicles with the "no-cap" fuel filler, I recommend getting a long neck funnel to use while using the shorter neck additive bottles (no matter what the brand). It can get messy "fighting" to insert and extract each bottle from the vehicle's fuel filler neck hole.
Jim Tadlock
Reviewed in the United States on November 5, 2022
I’m no mechanic, so when an expert recommends a product, I tend to listen. I’ve put one of these in each tank of gas in my Honda CR-V, it seems there’s more power from the engine. No differences in fuel economy.
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