All cossies from factory will use oil. Only ones that don't have been built to a higher tolerance.

Ford state for every thousand miles it's a pint of oil possibly more if given a hard time. This remember is with 204bhp.....So then you ask the engine to do 300+ bhp yet still not to use oil..?

Mine uses a bit being a 95k engine.

For you I would get James to do a full check over and do your cambelt and get all the niggles sorted in one hit.