Refueling trucks with fuel trailers and maintenance,fuel trailers. And really the fuel burning rate while idling bring it down a bit.For defult trucks and modded trucks,And the damge hit points.Trucks are ment to take a beating alittle.Look into cosmedic damage then damage to truck.And possiably look into people who host a party there connection isn't red baring.It not fare to other players that join in.IF lost connection with host the trailers and such they purchess on there lobby.Should be refunded or telaported to there map.Like common shit.It isn't rocket science.

@Voyager340 The only thing i can grasp out of this, is the thing with refuelling from trailers.
You need to attach the trailer to a truck that has a running engine. Then from that trucks Advanced menu choose the fuel-trailer, and you will get options for re-fuelling any truck that is close enough, eg inside a diameter around the fuel-trailer.