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    Oil formulation games. Opinions, facts, thoughts?

    Hello. I'd like feedback on this. I may be wrong on some points however the same Valvoline "families" of motor oils sold at Walmart, Napa, Lowes, Home Depot and Advance Auto, etc. which are sold by the quart and 5 quart jugs appear to have very different formulations from package to package and...
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    Is 5W and 0W essentially the same flow/lubricity at 40-60F +?

    OP, any result to report?
  3. C

    Mobil1 5W40 FS x2: What is the point?

    I bought some of this 5W-40. The X2 is not on the label now. I think this was discussed earlier.
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    Mobil1 5W40 FS x2: What is the point?

    Thanks. The 5W-40 might be worth 2 PSI more oil pressure. Wonder how the TBN is going to hold up.
  5. C

    Mobil1 5W40 FS x2: What is the point?

    Here is the PDS download https://pdfgenerator-west.exxonmobil.com/PDFHandlers/PdfGeneratorHandler.ashx?component=PDS&downloadUrl=https://www.mobil.com/en-US/Passenger-Vehicle-Lube/pdsdownload/NA-XX-Mobil-1-FS-5W-40-?p=1
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    Mobil1 5W40 FS x2: What is the point?

    The new label also has 229.5 approval. https://www.mobil.com/en/lubricants/for-personal-vehicles/our-products/products/mobil-1-fs-5w-40
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