Pick the cheapest dual rated HDEO 10W-30 and use it in everything. Forget what some of these Chicken Little, sky is falling types are saying.
You should also be looking at pails or drums not gallons. Buy from a distributer. Open an account with them.
I've been servicing equipment in the field for the construction industry as a second career for 13 years now. EVERYBODY, and I mean EVERYBODY, consolidates their oil. In SoCal where I cut my teeth, it was SAE 30/40 in everything, including hydraulic systems and Power Strokes. Here in snow-covered Michigan with the temperature in the teens, it's 15W-40 in everything, including gen sets, welders, pumps. A few cold crank issues aside, it works, so who am I to say anything? They do what every other owner does, buy based on price.
We got an F-150 right now that I know for FACT has PYB 5W and 10W-30, Wolf's Head 10W-30, bulk 15W-40, and MC 5W-20 (I put that in because 5W-20 is recommended). That truck is the red-head step child. Gets beat on, overloaded, and idles for hours and hours. Has 185k (2002) and runs like a champ.
I got I good idea what your equipment looks like and how it's being used. Any quality 10W-30 (dual rated HDEO of course) and you will be fine. Better yet would be Delo's new 15W-30.