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  1. W

    Dissolving sludge after change to Penz Plat?

    That could certainly be a factor. I didn't let it sit there and drain for an extended period.
  2. W

    Dissolving sludge after change to Penz Plat?

    That's a different product. ESP is "Emission System Protection" (low SAPS). Walmart doesn't stock it unfortunately. I guess Mobil 1 ESP isn't all that expensive relative to some of the other choices, but the MB OM642 takes 10 quarts... Autozone stocks ESP in 5-qt jugs, but they're $36-vs-$26...
  3. W

    Dissolving sludge after change to Penz Plat?

    Thanks all. I was planning on no more than 10k interval in general. I'll try not to worry about it. After the immediate darkening it seems to have stabilized. Mobil 1 ESP 5w30 is pretty dern expensive! That's an interesting idea though. I was actually considering using PP 5w-50 Euro L which...
  4. W

    Dissolving sludge after change to Penz Plat?

    Hi all, I recently did the first oil change on a new-to-me 2016 expedition with 3.5 ecoboost with 120k mi. The Ford dealer I bought it from had changed the oil just prior to my purchasing it and the appearance of the oil changed gradually through the 5K OCI from clear to brown toward the end of...
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