oil viscosity grade

  1. W

    Oil for W169

    Advice please as about to do an oil change, Castrol recommend Edge 5/30 or 0/40 Fully synthetic oil for an A150 W169 (its done 53,000 miles) (Mobil 1 not available in my location) It presently has Edge 0/40, is that the best choice of the two for my circumstances or doesnt it matter...
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