A few weeks ago I had my 2007 GTI in for a 90k service (oil, oil filter,) plus cam belt and water pump plus the addition of servo vacuum pump at a VAG specialist I have used for the last 4 years.
When I dropped the car off I saw the invoice of the work to be carried out and upon inspection I noticed that the oil was Castrol Edge 10w-60 Fully Syn. I question this to the the mechanic as I usually/previouslly have the Edge 5w-30 LL. They say that 10W-60 is a better oil and its what we put in our modified GTi's for track use and hard driving. I don't track or drive my car hard nor is mine modified, I replied. Can I have the 5w-30LL. They replied that what we put in diesel cars (!!!) So I said what do you recommend....5w-40 the mechanic said. Okay then put that in. I go away. Later that day I get a call saying that I need a new servo vacuum pump as it is leaking. Then I question the oil again and the mechanic put in the 10w60 oil when I said put the other oil in - 5w-40. They re-change the oil to the 5w-40.
In the mean time I order some Castrol Edge 5w40 from opie oils. It finally arrives today (they had supplier issues) and I notice on the bottle it is for "Fur Benziner Und Diesel" which is "For Petrol And Diesel". That makes me think, so I check on here and read this:
http://www.mk5golfgti.co.uk/forum/index.php/topic,5586.0.html...The consensus is that Castrol Edge 5w-30 Long Life is the oil of choice and recommend my VW (its says so here)
http://www.volkswagen.co.uk/owners/recommended-oilSo now I am wondering have I got the wrong oil in my GTI??