So I just sent an oil sample in for analysis after having gone over by 56 miles according to the maintenance minder. I've had my car for a bit over a year now (bought used with 9k miles) and this is my 3rd oil change. Past 2 oil changes have been at 15% and 10% remaining, this time I just couldn't fit in an oil change in time. According to Blackstone they were surprised as to how clean the oil was for 12k miles and would suggest trying 13k.
I won't be trying the 13k mile interval until my hondacare expires in a couple of years, but thought this was interesting.
I tried searching the forum for others' experience with Blackstone labs and their I2, but found nothing, but suggestions to use them. Thought I would share my results everyone.
For those curious about my driving conditions, I have a 40-60min (~30mi) one way highway commute to get to work with a small 530ft hill in between home and work.