Bought this last year instead of Stabil and so glad I did. Usually in spring starting my lawn tractor I have to clean the plug and it is still sluggish. Also this can keep fuel fresh for over two years. Price on the larger bottle worth it as half the cost of smaller. Only issue is when doing couple of gallons at a time had to adjust since one oz will treat 15 gallons. But all that this does is well worth it.

I HAVE BEEN USING THIS FOR 10 YRS. IN MY 96 VIRAGO, IT REALLY DOES WORK.RECENTLY HAVE MIS FIRE ENGINE CODE ON 2000 BUICK REGAL AND PUT SOME IN GAS FOR ABOUT 2 WKS. NOW NO MIS-FIRE CODE. LIKE THE COMPANY SAID, IT'S NOT YOUR ENGINE, IT'S THE FUEL. TRY ACCORDING TO DIRECTIONS BEFORE U TRY OTHER CAUSES AND SEE FOR YOURSELF. VERY SATISFIED CUSTOMER,