Mercury - Quickstor Fuel Treatment and Stabilizer Fuel Care Series 12 oz 8M0047932. Overview. There's a moment at the end of every season when you shut the engine down and just sit for a second, listening to the quiet. The water settles, the air cools, and you know it's time to tuck your gear away until the weather swings back in your favor. That's where Mercury Quickstor Fuel Treatment and Stabilizer 8M0047932 steps in. It gives you the comfort of knowing your fuel system will be just as ready