I agree, I do all my own servicing on my Disco 2 TD5 - LR stealers are SUCH a FECKIN rip OFF . . .
My LR Dealer wanted £99 + vat just to change the eng oil and filters, I did it myself in well under an hour, I used a Comma oil that met ALL the APi and SAE requirements specified by LR, bought from a motor factors for £13 per 5 litres, got the filters from Paddock's, job done for less than £30.
The likes of Castrol, Shell etc are no doubt good oils, but it's the same mentality as not buying Tesco or Asda cornflakes cos Kellogs are better !!!
If anyone wants to pay well over £40 for 5 litres of Castrol/Shell ??? - carry on, there's one born every minute as they say ?
I know I could do it for even less using Tractor oil ?? but prefer to stick to an oil that meets (or exceeds) the LR spec !!
I am gobsmacked that LR would (if I was stupid enough to let them) charge a WHOPPING £475 for a so called full service, when the main service consists of engine and gear box oil change, a load of easy checks, and squirt a bit of spray grease here and there !!!
I appreciate that not all can do home mechanics, but I would suggest - get yourself done the local college evening classes and do a course, you'll save a fortune !!!!