Have you seen this enlightening document?
Sudan AirportsInformation Directory 2007
I believe the 2 recommended fuel suppliers in Sudan are
Shell BUT sold in 2008 tp OilLibya???
and Petronas
PETRONAS
It's been a while since I was there (2004) but I would imagine the standard African rules still apply (though petty corruption is probably still low)
At that time the only decent Hotel was the Port Sudan Hilton now the Mercure Port Sudan??? but not listed by Mercure/Accor
I was at rhe Bashayer Marine Terminal near the airport - 100,000 Tonnes Nile b;end No Problem!!!
PZU Out of Africa - (Retired)