If you have 65 litres, lets say 63 litres usable.
912ULS comsumption of 18 litres per hour at 100 knots.
Distance 262 nautical miles, lets add 10 nm each end for manouvering, say 282 nm trip.
Time with zero winds would be 2 hours 49 minutes.
51 litres would be used plus 30 minutes margin (9 litres) so 60 litres total.
No allowance for headwinds which you would need to monitor.
You need to confirm that your tank actually holds 65 litres.
Also confirm your fuel consumption of 18li/hr.
You may already have (just) enough although I would probably do some research on alternate fields 30 minutes before your destination (both ways).