I store my small engine gas in Eagle metal safety cans and add a half ounce of Pri - G fuel stabilizer to each 5 gallon can. I use the gas within 6 months of purchase. With all those precautions, you would think I would have zero ethanol problems. I had a riding mower that sat for 6 weeks outdoors covered with tarps and filled with stabilized gas. Today I went to use it and the smell of spoiled gas was overpowering. I drained the tank, refilled with E zero gas and the mower fired up and ran fine. I am shocked that the gas spoiled when treated with Pri-G. Is there another stabilizer that works better? I am so [censored] about this I may start running E zero, but, it is $3.40 per gallon here. Thanks in advance for any advice.