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Message: <blockquote data-quote="NXR71" data-source="post: 31823" data-attributes="member: 6892">Although some people do not care about Dexos certifications, which can prevent LSPI (low speed pre-ignition) with turbo GDI (gasoline direct injection) engines I do. I'd check the GM database first: <a href="https://www.gmdexos.com/brands/dexos1_3/index.html" target="_blank">https://www.gmdexos.com/brands/dexos1_3/index.html</a>None of the Valvoline Clean and Restore oils seem to be and it's been blamed for causing engine problems on GDI engines by some people (because, you know, some people have to blame anything but their own choices).Two Mobil Advanced Clean oils do have Dexos certification: 0W20 and 5W30.</blockquote>