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Old 04-16-2021, 08:10 AM   #20 (permalink)
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ND Miata - '15 Mazda MX-5 Special Package
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If you're feeling adventurous, you can always go even thinner, and send a sample off to Blackstone for analysis (metal content). I determined 0w20 has very marginally higher wear than 0w30 in my car - which I don't feel is worth it, since the 0w30 is *nearly* as thin when cold, and most of my fuel economy losses happen at low temperature.
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