I thought that I would share my first UOA on this engine (T24A-FTS) for those here that might be interested. Oil tested was PUP 5W-30; 4,326 miles on the oil (mainly short trip/spirited driving); 15,311 total miles on the engine.
I was specifically curious to know if this engine was a fuel diluter or not. Turns out that it is, at least to some degree. Knowing this reinforces and validates my decision to use a heavier weight oil than recommended (for the NA market) and keep my OCI's to around 5,000 miles.
I'm hoping that the elevated Silicon is from seals/gaskets from a low-milage engine, rather from contaminants entering through the air intake. I changed the air filter at around 12,500 miles since there is a lot of dust in the air where I live.
Moving forward, I'm thinking of moving to a Euro oil such as M1 ESP or Amsoil Euro 0W or 5W-30.
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