HappyFuel, Fuel Stabilizer does not utilize or contain any of the materials listed on California’s Proposition 65 list. We will continue to monitor Proposition 65 and will update our labeling when necessary.
California Proposition 65
"We found HappyFuel® to be the best fuel stabilizer for storing our vehicles."
Jim C.
Owner - Motor City Grind
"I often store my vehicles for months between use, I trust HappyFuel® to keep my collection ready to be driven anytime."
Paul C.
Prominent Classic Car Collector
Designed in California, Manufactured in Detroit.