Is there any difference between long life oil that VW dealers use? and castrol edge that I have previously being using (topping up)?

Reason being service manual has a ticky box and ever since car has been new its had "longlife engine oil used" "NO" for every service!
But with this being my first service since i bought it (2d hand) its longlife they used. Now this might be exaggerating but I could swear the engine sounded different when pulling into the drive on the way home..
