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Corvette
C7 Forum
Oil
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<blockquote data-quote="cdnrx1" data-source="post: 323904" data-attributes="member: 2880"><p>You're absolutely right. I know that the dexos 2 spec is available in the 5W-30 viscosity but it has never actually been specified by GM for use in the Gen V LT1. Does it matter? Probably not unless there is a question of using the correct spec oil in the event of a warranty claim. I would think that the dexos 2 would be fine but dexos 1 is the specified oil if using 5W-30.</p><p></p><p>From the C7 User's Manual Prior to 2019 (before 0W-40 ESP / Super Car Formula) :</p><p></p><p>" Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity</p><p>grade. Mobil 1 dexos1 is recommended. See Engine Oil - 222. "</p></blockquote><p></p>
[QUOTE="cdnrx1, post: 323904, member: 2880"] You're absolutely right. I know that the dexos 2 spec is available in the 5W-30 viscosity but it has never actually been specified by GM for use in the Gen V LT1. Does it matter? Probably not unless there is a question of using the correct spec oil in the event of a warranty claim. I would think that the dexos 2 would be fine but dexos 1 is the specified oil if using 5W-30. From the C7 User's Manual Prior to 2019 (before 0W-40 ESP / Super Car Formula) : " Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. Mobil 1 dexos1 is recommended. See Engine Oil - 222. " [/QUOTE]
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