My experience with Pri-G... Outstanding product! I had 3/4 of a tank of seven+ years old gas in my boat. Storage... out of sight out of mind. The tank holds 60 gallons! What to do with approximately forty gallons of rotten gas... try Pri-G. I super-dosed the gas over the weekend. I added twice the prescribed treatment. I trailer-towed the boat around the block a few times to agitate the mix. The gas that weekend was pink and smelled like varnish. I didn't hold much hope. However, I pulled some of the gas from the tank on the following weekend and was shocked that the gas was nearly clear and smelled like fresh fuel. I then drained the carb bowls and ran all the rotten gas out of the lines. I then primed the system with the newly converted gas and fired up the boat with the water hose attached to the outdrive. I was amazed that it fired right up, the exhaust burn smelled normal, and I took it to the lake. We burned all that gas with no issue!
Not only will Pri-G convert rotten gas, but it also cleans carbon and will clean a fouled carb if you can get it running. The neat thing is it mixes with the fuel and doesn't lay on top to eliminate oxygen phase degeneration like Stabil and the other gas treatment stuff. When you mix Stabil you have to ensure the tank remains stationary so it will again separate and float to the top of the fuel to create its oxygen barrier. If you have a vehicle or tank that will be jostled around Stabil is not a good choice. Pri-G has been used by refineries and the marine industry for years. The first amount I bought was only available in 1-gallon size and up. Since then they've begun offering small cans. The mix ratio is crazy. It's highly concentrated. 1-pint will mix 256 gallons of gas. I buy it by the gallon. It doesn't hurt to overdose... Bottle Size Gasoline Treated...16 Ounces @ 256 gallons; 32 Ounces @ 512 gallons; 1 gallon @ 2,000 gallons. This all breaks down to 1/4 tablespoon of Pri-G per gallon of gas. So a little over a tablespoon will mix a 5-gallon can of gas. I usually use 1-1/2 tablespoons per five gallons and I use it in everything year around. It works well...