My manual shows only 5w30 recommended, with 5w40 being temporary for short term if the 5w30 isn't available (and replaced as soon as), no mention of 0w30. My investigations into 0w30 when they used it last year at 1,500km did say it was definitely fine and would be better for low temp starts (it can get to -20 in the winter sometimes here, although that's rare and I park underground).
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