i was told the other day that spraying this into my carb till it kills the engine before i winter it helps lube and store the motor. before i go squirting anything into a good running motor thought ide ask a few Q's. ive never used the stuff. also if i remember right its better to fill the gas tank and use stabilizer than to empty right? don't it build condinsation if its enpty? i have a 20 gal alum tank. its full now and will only be ran maybe a couple more times out and will be back in action by mar so it don't sit very long dormant.