I repaired a big water tank in a factory a while back and I took both machines. I let the hired help run the 200 and I used the little one, 16 hp Briggs on it. I have a bigger fuel tank that goes on it and we were running 5/32 lo-hi, must have had 100 ft of lead. I am not sure how long it would last but at one point I burn a can of rod as fast as humanly possible to put them in the stinger, put a dozen electrodes in one hand so I don't need to reach for them, not so much as a burp with it, had lots more to go without breaking a sweat. Heck one job we hook a 55 gallon drum to it for fuel. It was running a well pump, shut it down every couple days to check the oil, change it every couple of barrels. Maybe 300 hrs or so of run time. My SA has a POS Prestolite distributer in it that has caused a couple problems but that weldan power is the best portable I ever own especially considering the cost, about 1600 when I bought it. My neighbor used it this weekend to weld a patch on a tank, long time career welder, says the same thing, great running little machine. I have another small footprint Linc I carry on my truck, I think this one welds better. This isn't disputing the need for bigger and better but I am never scared to take it anywhere, starts, runs, sparks come out the stinger as long as you can hold on to it or until it runs out of gas.