With either an M1 or Castrol Edge 10W-40, you are entering a much thicker oil category which will be felt in fuel economy and thus you might need to push the engine harder. The Mobil 1 0W-40 shear rating is nearly the same as a Castrol Edge 10W-40, but the M1 0W-40 will help with flow protection in lower temps and with the higher wear additives so hopefully, oil consumption doesn't get worse. I couldn't find the Castrol 0W-40 shear rating.
The 5W-30 and 10W-40 oils are old viscosity oils. When the needs of newer engines changed the 0W-40 was developed, such as for higher compression, softer metals to save weight, keeping turbo bearings happy in a daily driver, and running hotter operating temps to be more efficient. Not sure why more people are not trying it. I started to phase in other older cars to the 0W-40 oils in which I used 10W-40 M1 HM previously for thousands of miles with great success too.