Originally Posted By: windstrings
Living in texas with moderately hot temperatures.. I could have gotten a tad thin but according to the report.. not metals we high etc.
As far as silicon levels.. it was discussed as to whether the stock factory air filter was sufficient verses a leak "has a rubber seal all around" verses the sheer volume of air pulled in over a 25K mile run.
We do get lots of windy days and I'm sure lots of "silicon" is in the air.....
I guess the next question would be.. "does that silicon hurt and cause damage and if so is there a way to remove it or prevent it from reaching such levels?"
Maybe you guys can answer... this may be the weak link limiting long run times in my area.
I was curious to see the reaction among the Prius folks, so I did a quick check of the thread over there. I stumbled across your comment here:
"While they hinted I might check my air filter due to the silicon levels.... I have "never" changed it.. I only blow it out periodically with compressed air..... all the seals are perfect... especially on my 2010..."
Hmm....the silicone levels (which really aren't that high given the mileage) make more sense now... That's a pretty bad idea, both blowing compressed air over the filter and removing it in the first place. I'd suggest adding an air restriction gauge like
one of these , which ever is appropriate for your intake system, and leaving it alone. Every time you open it up, you're adding contaminants to your engine, and blowing compressed air is just pushing contaminants into the pleats. Not good. Additionally, you aren't taking advantage of the improved filtration as your air filter gets "dirty". I'd give
this a look.
Besides that, I seriously do think this could be a good application for a bypass filter and 100K OCI's or greater, sampling every 25K. Between consumption and top-offs when changing the bypass and full flow filter, TBN should still be within range almost indefinitely. As long as the oil stays in grade, you'd have nothing to worry about.