B3C 7-903 Mechanic In A Bottle 2-in-1 Gasoline Quality Test Swabs

B3C 7-903 Mechanic In A Bottle 2-in-1 Gasoline Quality Test Swabs.  Test for bad gas! Simply dip a 2-in-1 test swab in your fuel tank and check the test chart to determine your fuel quality and see if you have water contamination. For both standard and 2-cycle mixed gasoline. 2 part test for stale fuel or water. Keeps bad fuel out of equipment. Fast, easy and inexpensive test. 3 count pack.