don't know peter, suppose its the modern way, like you I would rather do it myself but with new cars you cant, you have to start the car let it run for 5mins then switch it off stand for 10-15 mins then go throu settings to see the oil level, it will then show you the level or tell you of how much oil to add, it says on my hand book oil should only be changed every 16,000mls, also found out that jaguar have changed oil co, from prev recommending Castrol 5w30 . they are now on to shell c1 5w30 low ash for diesels, helps with the dpf