Comments by "David Elliott" (@davidelliott5843) on "Will \"Graphite\" Help Motor Oil Performance? Let's find out! Vintage Arco Graphite vs Quaker State" video.

  1. I used Slick 50 in a 1990 diesel. The turbo failed at 140K miles. Pretty standard for that engine.
    4
  2. I can see the carbon settling out into the sump and elsewhere but cannot see why it would affect the catalytic converter. Poor fuel burn also produces carbon which does not damage the cat.
    1
  3. It’s alleged to offer less engine wear. But as even the posh stuff with Teflon had no measurable effect it’s unlikely to do anything.
    1