JavierF
You'r really asking the wrong guy, for that info, as I don't travel that much, comparred to most people.
I am a dissabled american vet, from Viet Nam, and I just don't get around that much, or that well. Don't get me wrong! I'm not totally crippled, just old, and very slow!
Many people may not agree, but I don't pull any punches, and I tell it, like it is.
I have not run it for a coupe of hours straight, as that would only waste a lot of gas for the point of proving what?
If heat didn't get out of hand in 40 minutes, it shouldn't do much more than that, in two hours.
I live for the most part, at the very bottom of Florida's west coast, and have virtually everything I need within three or four miles. So I really don't do that much driving.
There is nothing east of me, for 80 miles (except everglades), nothing south of me, except the gay boys in Key West (I have no desire to go there). Gulf of Mexico, west of me, and I can be in Ft Myers, in 25 minutes (to the north).
I never go east, as there isn't anything there but suggar cane, rattle snakes, and aligators, until you get to the other side, and there, they don't anylonger speak our language, or even fly our flag!
But truthfully, I seldom, even venture more than five or six miles, from home. So really, you are asking the wrong guy!
Most of my business comes to me, rather than I go to them, so again, there is not much travel involved. I repair tubular shutter/awning motors, and most of that, is done with credit cards, and through UPS/DHL shippers.
At the very most, I run maybe 40 minutes, at a time, and hold fairly true to the 128 to maybe 135 F mark, with the three generators.