Yep. I always keep mine on reserve. I don't need to be sputtering along a city street when I need to move. What if it happens as I'm accelerating from a stop light. I don't even like it when doing 70mph on the freeway when it starts sputtering, as, by the time I've reached down to turn the petcock to RES while losing speed, I've dropped below 60mph & look like an idiot putting along in the fast lane, then suddenly accelerating back up to 70. Nope. Ain't gonna let that happen. As usual, it's just a personal choice. Mechanically, it doesn't make any difference when you fill up whether the petcock is ON, OFF or RES.