Cripes, Honda's original spec of 5w-20 was never a mistake. The switch to 0w-20 was to gain that minute mpg improvement to better meet government standards. With that said, during your New England winters use 0w-20 if it makes you feel better.
Your source link doesn't appear to be working. Wouldn't mind looking at that if you have a working link.
So I only have the chart I posted as a pdf. This from Honda looks updated:Your source link doesn't appear to be working. Wouldn't mind looking at that if you have a working link.
No harm in using a 0W-20 oil. At normal operating temperatures it's the same "thickness" as a 5W-20 oil.It would save time, and, perhaps, money. My other car is 0w20 specced, but I would only switch to 0w20 for the Pilot if I would not be causing harm. There may be a good reason why 0w20 was added as an option as well. Hence my original post. Thanks for asking!
I like that 'frankenbrew" idea of your approximate 2w25! I never thought of that. Neat trick making your own brew. I know some will catch a coronary over it. LOLI'm the oddball that thinks this way: if I lived up North and saw those temps, I'd want a 0W. But, I also know I have a -20 spec vehicle that consumes oil even on HM oils, so I'd want a -30. So my first choice would be a 0W-30. If that isn't easy to find and/or is expensive (usually it's both), then my next choice would be a 0W-20/5W-30 frankenbrew to get me somewhere in the ballpark of a 2W-25.
Edit: I service a 2005 J35A6 regularly and have used everything from 0W-20 to 10W-30. It is one of the least picky engines I've ever serviced. Just keep it full of something and it'll run forever. 224K and still running strong, even the original transmission without any repairs!