[IYAS9YAS]

I think the McD’s coffee was somewhere in the neighborhood of 190 degrees,

The link here recommends between 195 and 205 degrees. http://www.ncausa.org/About-Coffee/How-to-Brew-Coffee

My Keurig is set to brew at 195.

[Trod Upon]

That link you sent also specifies to let it cool below 140 degrees before drinking. Brewing hot is one thing, but serving at those temperatures is a recipe for disaster.