Quick run at Laguna. Man, what a mess. Full field of B/S drivers. Only 12 finished on the lead lap. Lots of wrecks. Plenty of tire penalties. Tried FM 2 to take things lightly and help tires, ended up with enough fuel to run the whole race, despite a 5 lap experiment in FM1. So fuel isn't an issue but I did see some topping up.
@SabanSon welcome.

Hah! You're in the next race where I am going to try the no stop!
And the result is that the no stop is iffy. I was doing well until about lap 11 when I started hitting at least 1 sausage kerb a lap. Dropping my lap times to be a second slower at least. Still went from p18 to p11, but with 2 laps to go I was still p9. Overall time was faster by about 3 seconds, so if you are able to keep it all clean it can work.