Ash content corrolations to Pre-Ignition

[NoDOHC]

I think I am confused. I read 38 um / cycle wear for ATF and 19.6 um / cycle wear for two-cycle oil. Is the 13.5 published somewhere else that I can't immediately see?

The 96 hour cycle makes a lot more sense, but I am still confused about the above numbers.

Also, this test was likely done with the same quantity of each oil injected through the stock oil injection system. This data does not prove that additional two-cycle oil increases seal wear.

[vex]

Originally Posted by NoDOHC

I think I am confused. I read 38 um / cycle wear for ATF and 19.6 um / cycle wear for two-cycle oil. Is the 13.5 published somewhere else that I can't immediately see?

Yes, the 13.5 is published in the sae paper, but I didn't copy/paste a picture of the chart.

The 96 hour cycle makes a lot more sense, but I am still confused about the above numbers.

Also, this test was likely done with the same quantity of each oil injected through the stock oil injection system. This data does not prove that additional two-cycle oil increases seal wear.

Volumes are measured as you can see in the previous posted image--but not constant. The volumes differ from one to the other, but may be based upon viscosity and other possibilities. However, since both instances of the engine were run per cycle (96 hours), and greater wear was indicated with two stroke it is only plausible that running two stroke for lubricating the apex seals is not as efficient when it comes to lubrication of them. That is not to say that it's not beneficial to run two stroke for the lubrication of the apex seals since ash content would be reduced to nill, and would burn cleaner than regular oil.