PA28
I have over 20 years of experience flying PA28/150,161,180,236. Except for the 236 , the others have a fuel capacity of 50 gallons with 48 usable. The engine in the pa28 is an IO360. I have found the furthest I've ever been able to fly the plane is 500 nm leaning out to the max. The draw back is that you are landing with minimum reserves of maybe 4 gallons per side. Normal flying in these planes should be about 450 miles and then landing with a 45 minute reserve.
Mike