Arjj
Have owned 3 Porsches over the last 30 years & looked after a fair few more, never seen oil use like your friends, other than if it was shot usually from poor service real brutal use or high mileage, would suggest a changes of dealer.
Looking at the helicopter industry I feel that both the small user & the majors role over
& take the s**t that manufacturers dish out, both in price of parts & reliability of product in general.
Reading through threads we have rain ingress (a 1950 car problem) causing untold damage to electronics, the recall on cylinders (After market) as H500 says oil use, again a 1950 automotive problem, over rev past 3200 & the bill can be eye watering or worse. poor paint \corrosion, blade de lamination, erosion strips lifting in hours from new. doors that pop open. gear boxes, non delivery of spares, non delivery of product (Canada)
Would you like me to go on ?.
If the customer accepts the poor level of service that is the service we will get.