^Yeah on GT6 on the PS4.
The R10 will go longer between stops than the comparable 908, but the 908's torque makes it a bullet down Mulsanne.
What I found to be useful, was plop in a stage 3 turbo into the R10, and then restrict the engine power down to what you want as what makes the diesel engine superior is in torque not horsepower. That, and you can save on the fuel side of things.