Synthetic Mobil 1 question?

Depends on the number of cold starts. Lots of cold starts and short trips degrades the additive package faster. So mileage is irrelevant in that case. You're most concerned about using up the anti-corrosive and anti-oxidant additives when you do lots of cold starts. Then you lose rust protection oil degradation protection.

With a Honda and Mobil one 8000 is the mileage you should change no matter what the time period is..Of course check and inspect the oil at least monthly to make sure oil is clean with no burnt smell.

This is an "Oil Change 101" question. Oil change intervals are considered with both distance and time in service. In other words, it's ie. 8,000 or 10,000 miles or ie. six months or one year, etc. whichever comes first. Getting an oil analysis is not generally cost effective but it does answer your question that is answered by the lab report, not by wanna-be wrench pullers that think they know it all.

The answer is in your owner manual that states....."if the service oil message does not appear more than 12 months after the display is reset, change the oil every year."

With normal driving,I change mine every 8000 miles.