They don't have any 0 weight oils in the high-mileage variety, that I know of. Mobil 1, I believe, only uses syn's anyway, so it's just a matter of getting the lower weight to get that last little bit of efficiency from it.
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
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