Recent content by W116

  1. W

    Engine oil recommendations, -75 Mercedes 450 SEL

    I read this on acccc.net : "Another concern with older engines is PAO oil's effect on internal components made from Polyoxymethylene plastic (aka Dupont Delrin). PAO oils can potentially cause stress cracking of plastic engine parts made from this plastic. A Group III oil may be a better choice...
  2. W

    Engine oil recommendations, -75 Mercedes 450 SEL

    Hi, I would be happy for recommondations for engine oil for my old Benz. It's a 4,5 litre V8 with SOHC with manually adjusted lifters (no rollers). When I bought it the engine was extremely dirty inside with a 2 mm sticky soot/oil layer almost every where. I cleaned out as much as I could and...
  3. W

    -75 Mercedes 450SEL diff oil

    Ahh, thanks - than I keep it. I belive that w123 and w116 diffs are pretty much the same. /Niclas
  4. W

    -75 Mercedes 450SEL diff oil

    Oops I didn't know that the synthetic might creep out. Thanks for the info! I was aiming for "maximum protection" since it's a bit worn, it has 300000km on the odo. /Niclas
  5. W

    -75 Mercedes 450SEL diff oil

    I have old Merc with a non-LS diff and a 4.5 litre V8. The handbook says SAE90 for the diff but I bought Castrol SAF-XO 75W-90 (Synthetic), what do you think? Is it a good chioce? I live in Sweden so the temperature very seldom goes above 30 degrees Celsius. /Niclas
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