On latest 0.58 experimental, I am unable to refuel a V3S.
Unless the mechanics of refueling have changed and I could not just figure it out.
Thinking perhaps it was a bugged V3S or bad positioning, or a server problem, I tried it against 5 different V3S across two 1PP servers.
I approach the gas tank from the passenger side (screenshot 2015-07-23_00001.jpg), with a 72% full Jerry Can in my hands.
My only options are "View Contents" (of the V3S), "Drink All", "Drink" "Empty Vessel"
I'm not sure if the ability to view contents of the V3S is conflicting with the targetbox of the gas tank or what. Just my wild guess.