6 months usually. It should be fine for that long, if I ever feel inclined I can get the oil tested at a lab for metal wear.
Quote:
Originally Posted by sclitheroe
On the gasket thing, regardless, switching to synthetic will not cause engines to begin leaking oil, not anything that is within the timeframe I mentioned.
Question for you - did you notice the oil change interval, as dictated by the monitor, increased when you switched to synthetic?
My van has one too, which apparently monitors engine RPM, start/stop temperatures, operating temperatures, etc, to determine oil life. I don’t think it knows whether synthetic is in the engine or not, only what the lifespan for typical oil would be under the use conditions it has observed.
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Mine measures the same things. If it can go 15,000 on dino then the same mileage on synthetic should be fine. The big benefits for me are winter starting, and turbo life. I was mostly referring to older vehicles 15 years or older. I put synthetic in a 89 mustang and it leaked way worse than conventional 10-30.