Hi, I always reclaim my fuel after flying but I have a filter on the pressure line from the muffler to the tank to eliminate any foriegn particles[carbon etc] entering the fuel system.Remember you most likely have a filter on the bottom of your clunk in the fuel tank and also in your pick up line of your fuel container leading to your pump/handcrank,never had any problems with fuel discolouration.Keep it clean and it will last longer.