Oil Types - what's the diff, if any?
Currently using Castrol Edge 5w-30 in my 2.0tfsi Dynamik. i topped up before a couple trips to Manchester and i was going to get a refil from Tesco. they only have the Castrol Magnatech 5w-30, but that's fully synth as well, so i'm wondering what - if any - is the diff between them? the Magnatech doesn't have Audi as a named brand on it, is there really that much difference between the same grades of oil that putting Magnatech in would affect the engine rather than Edge? i'd rather be paying £30 for a gallon of Magnatech at tesco than £16 for a litre of Edge elsewhere :-/