Bet that Motorcraft syn blend is a recommended oil and it's pretty mediocre.
How and does this condemnation apply to CP's Honda factory formulation. I used MC 5w-20 and it worked well in a prev. application as far as performance but never ran a UOA. Do you have a UOA to back up your claim or are you just going off someone else's UOAs? And is this for specific applications cause the design of the engine plays a role too. Can you elaborate? I'm hoping you are not basing this on categories being it is not a full synthetic.
I don't know why he's saying it's mediocre. It's a great oil.
This wasn't a condemnation, rather it was a description of what the oil really is, which is nothing special.
If you're okay with 14% NOACK mass loss as well as barely meeting the cold viscosity standard for the W end of the grade, then use this oil by all means.
My point was that there are better oils on the shelf at various price points.
WRT the CP HGMO, I don't think that the factory fill is the same as what you'd get or buy as service fill HGMO at the dealer. There is at least one VOA of the CP HGMO here and it isn't too inspiring.
The old Idemitsu HGMO looked to be a much more expensively formulated oil. I still have some of it and am slowly going through it in the newer Accord.
Nothing wrong with a mediocre oil that meets the appropriate specs, but you can do better for around the same money.