Besides .Ive read where low
oil psi is a HP boost.Just like smaller lighter tires,lighter drive shafts lighter wheels. ect. and so on.In F1 they need to finish with no tread and no fuel so they are going faster at the end.All they talk about is lighter fuel load.Machined down wheels is now in.2 or 3 race max on the wheels.Any strain on the system is a drain on HP.Pull the tread off them tires youll go faster.At the end of a race they proably drop the already low
oil presure by external means to gain 15 rpms.Never ben there but it makes perfect sence to me.