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0w-20 vs 5w-20

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Old December 17th, 2019, 2:17 PM
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Default 0w-20 vs 5w-20
GM specifies only 0w-20 for my 2018 Sierra. I live in a hot humid climate and wonder if a 5w -20 weight be a better choice.. GM only specifies one blend.. Anyone use a different blend for high summer heat ??
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Old December 17th, 2019, 2:46 PM
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Stick with the manufacturer's recommendation. They would tell you 5-20 if it was ok to use. Especially if you are still under warranty!
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Doug D (December 17th, 2019)
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