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AC Delco PF64 equivalence. In use on my Regal 2.0 LTG engine for 7343 miles. Primarily during engine break-in with 2 fills of PPE 0w-40. Removed and replaced with another. Typical Wix sturdy build and base-end bypass and silicone ADBV. Plan going forward is 8-16k filter changes with 4K oil changes. GM says 7.5k oil & filter max, based on OLM. Euro cars go 18k miles/1yr.
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