The theory backed up by Argonne Labs analysis is the boric acid forms a plainar surface that provides layers on the exposed surfaces. But the bottom layer is chemically attached to the underlying metal surface. However, I could find nothing describing the effects of existing gunk and varnish on the boric surface formation or more importantly, imperfections that may be fixed by the boric acid layers.
Certainly, my few data points suggest the detergent effects of boric acid appears to lift previously deposited, fine material back into suspension and into the oil film between the rubbing surfaces.
If I had to do it all over again, I would start by draining the oil and throughly cleaning every exposed surface. Then reassemble and do the motorsilk treatment. But now I have to deal with the engine as it is.
My plan is to:
- bench test layer traps - one is a passive, loose weave fiberglass mat with the edges epoxy sealed and washed to remove loose fibers. The other is a layered fiber mat with electrostatic charged, particulate trap.
- drop pan, install pan liner trap and gasket - this will be the operational test.
As for motorsilk, I can draw no conclusions from this test. The residual gunk and varnish has made it impossible to measure any improvement.
Bob Wilson