Hey guys i am up for a 220,000 k service for my VT, i am taking it to a mechanic but what things should i be looking out for?

Also what type of oil should be used? I want to get a high quality oil and I'm not worried about price. I have the car on gas also which has been on for about 8,000km's so do i need a different type of oil or same as standard petrol?

Thanks guys