FIA president, Jean Todt, told the BBC earlier in July that he would be open to refuelling making a return to Formula 1 after waving goodbye to it back in 2010.
Todt is pushing for analysis to be undertaken to show whether refuelling would have a positive effect on the sport should it return.
Now current Formula 1 drivers are throwing their weight behind refuelling making a return.
“I am for refuelling, I think it’s a positive to get the car faster and lighter,” Grosjean said via Racefans.net.
“It makes it more demanding on the drivers. I believe also it could open some strategy.
“Driving a heavy car is not amazing. If we have lighter cars due to refueling, it’ll be better and also easier on the tires.”
Grosjean’s team-mate Magnussen agreed, saying it would lead to closer racing between the cars and teams.
“I think refuelling would be very good,” Magnussen said.
“It would have some positive effect on tyres.
“It would make the racing closer between cars. It would be more fun for the drivers and more challenging in the races because the cars would be faster with the lighter fuel load.
“Also I think it would be great to maintain some fast cars that can follow each other easily.
“Maybe they’re producing more of the aerodynamics and downforce from the bottom of the car, from the floor.
“Also, more equal resources for the teams to have closer competition between the front and back of the field.”