UPI all the way mate, I have done it myself a few times but can't be bothered with the hassle of trying to get rid of the oil. This way I buy my own oil and give it to the guys and they do the rest!
Fast, Efficient, Reliable, Honest, Affordable, Knowledgable
And ALL the guys there are Nissan enthusiasts. They look after you, its not unlikely for me to go down their for a few hours, talk some shit and have a few laughs while the cars getting fixed! I'm getting some work done at the moment so I will let everyone know how it goes soon.