i finally drained the gas tank on my "been sitting in a field for a few decades" 55. usually, i just take the old gas, pour it on a grease stain or two, scrub with a stiff broom and light...great way to clean the driveway, but...it won't burn!!! i took five paper towels, sicne i was out of match books, lit them and threw them on the gas...i burned the papertowels and left dry spots in the middle of the gas! no chunck came out of the tank, and i really don't want to drop it. how many would just put a glass filter inline and see if chunks come out vs. dropping and having cleaned and coated? i'm leaning heavily towards the glass filter....i'm too poor and i really can't afford extra services.