I'm on my second Skymaster. Given their age, fuel guages are not accurate. Don't trust them. Here's what I recommend:
1. Buy a plastic/glass hollow tube with gradations (sold at most aviation eqpt. stores) and calibrate it per the instructions that come with it.
2. Never, ever, take off unless you have visually determined fuel quantity with the tube.
3. Determine the fuel consumption per hour for your airplane at the typical cruising conditions you most use (don't forget that climb consumption will be higher).
Ernie
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