Sorry to resurrect this post. I ran across a document today that indicates that Mobil 1 ESP 0W40 is not suitable for Camaro 1LEs.
https://www.corvetteactioncenter.com...rint-1389.html
Does anyone from Chevrolet have input to this? Thanks!
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Jsut realized that the "not recommended" applies to the ZL1, not the normal LT1 1LE, so I'll continue to use that oil.