+1 for "People who are in lawn and garden have no idea what they are talking about"
I've run into some folks who really know their stuff at Home Depot and Lowes, but none of them have any idea about lubricants outside of door hinges and garage doors.
I've been researching generators for quite some time, as Texas is going to have another Scorcher this summer, and the EPA just shut down 2 coal fired power plants that were NECESSARY to keep the lights on during last summer.
So this summer it looks like they will have "scheduled" rolling blackouts during peak usage hours.
I'm thinking about purchasing a smaller unit to cool 1 room and run a mini fridge.
Since our peak temp last summer was 107, I'm thinking about just sticking to a brand name 15w40 and changing it out every 50 hours or whatever the manufacturer recommends.
I haven't purchased yet, as I am currently between jobs and things are tight.
Part of my decision for 15w40 is that peak hours are from 3-7pm, and the rear of my house faces West. So this air cooled motor will be in direct sunlight during the majority of the time it is running.