Ok so my 2009 v70 2.4d is due for a service, 104k miles, what oil should I be using, 5w30/ 0w40/ 5w40 etc? Castrol or shell helix/ultra? Are they all roughly the same or not? We don't get freezing temperatures anymore. I've used Mobil 1 for years but I'm thinking shell is the way forward?
Soooo confusing
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