I wouldn't take away any "absolutes" from that article, but I do think that it's mostly on target.
Originally Posted By: Dlauth
So it seems no matter what, you would want a 0w-xx oil.
In general, a 0W-xx would be preferred to a 5W-xx or a 10W-xx, especially if you're paying the same price for it. For example, if you're buying a synthetic oil anyway, you might as well get the benefit of lower startup viscosity while maintaining the same viscosity at whatever xx grade you pick.
But there are, of course, a variety of other factors. Is your engine under warranty, and is a 0W-xx allowed? If you're cross-shopping conventional 5W-xx or 10W-xx oils, are you willing to pay more for the synthetic product to get the better startup flow? Different people will answer those questions differently.
Originally Posted By: Dlauth
You should also run as low of a grade as you can with still maintaining 75psi @ 6000pm.
There is probably a point for every engine beyond which you get significantly diminishing returns for going "up" a grade (and vice-versa). Some have the saying, "as thin as possible and as thick as necessary". Similar to what is posted above. The concept is to not run an oil thicker than necessary to achieve the correct oil pressure for your engine. I wouldn't assign an absolute value to it (like 75 psi @ 6,000 rpm), but I would check your engine's service manual.
Originally Posted By: Dlauth
Higher grade increases oil pressure, while lower grade lowers psi.
I think that statement is generally true.