I'm pretty sure 5w30 is used for 'LongLife' servicing intervals and 5w40 for time/ distance
I think the latter is slightly thicker than the former but other than than that unsure of any differences! Probably best to stick with Castrol or Quantum but wouldn't worry too much
If your really concerned post to opie oils as I'm sure they'll be able to help and explain everything
For topping up I'm using Halfords VW/Audi 5w/30 fully synthetic (meets VW 504 spec), great price when on offer, and been using it and 0w/30 in my previous Cupras for years.
(meets VW 504 spec)
My 1.2 drinks oil, use Castrol edge 5w30 1 litre is £8 at Tesco, bought some today.
Great thanks for the info
I've been in the shed clearing stuff today and actually found a 1l top up kit I had with my last VW - Shell VW spec 504.00 5w/30! Unopened as my last car didn't use a drop, but manufactured date is March 2010, is oil ok this old or should I get a new carton?
As it is the right grade and spec it should be fine, I would have no problem putting it in my motor, especially as it is only being added as a top up to the original oil already in the car.