Transmission Issues Resolved?

ImportConvert

If your car makes it past 60K miles, it's not going to just suddenly start drinking oil and grinding.

Nissan addressed the oil consumption issue, and I think may have silently addressed synchro's.

Rui Z

That's probably true for the oil. However, I'm a slow driver, so it will take longer for the synchros to wear out for me. Mine was a December 2009 build date.

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ImportConvert

I don't think it's necessarily wear related to slow vs. fast driving (unless by fast you mean a lot of powershifting, etc), but rather a tolerance/defect issue. When tolerances are off, mechanical things wear very fast. In my experience, either it will break ASAP, or it will last until the end of its normal service-life unless something occurs during that timeframe.

Parts in moving assembly seem to have a lot of wear initially, then the wear will taper off after the parts are lapped in, and slowly/steadily continue to wear until tolerances open up beyond spec, and once again the wear accelerates rapidly toward decline/end of service-life. This is of course barring any changes during that service-life, such as a hard launch tweaking a pinion bearing, etc.