After a cold flight the fuel temperature had dropped to around -37c in cruise. I didnt check how much it had warmed by the time i landed. I parked the aircraft and ended the sim. Today, 15 hours later I load the aircraft with the restore position to continue my flights, and the wings are frosted even though its 6c OAT. I check the fuel study page, and my fuel is still -17c after what would have been a long stay of 15+ hours. This may be correct, but does the restore take this into account as surely the fuel would have reached a temperature closer to ambient over that time period.