Waiting for the snow to melt. Anti-freeze in the Permagreen Ultra tires (or NOT). I notice that my tires contain ice. Tinkering. I checked the output of my PG Ultra using the antifreeze in the tank. I opened the bottle fill valve at the lower left of the tank and discovered I am getting about 80 ounces per minute. (actually 20 ounces in 15 seconds--using the freshly charged battery--12.7 volts--without starting motor). But the instruction manual says I should be getting 90 ounces per minute. I am 11 percent short. Darn--but probably close enough. I pulled the tubeing off the two three way valves. Then tried it with all three going at once. Still got about 80 ounces per minute. I figured I am getting about 5500 sqft covered per gallon. Changed my fill chart to reflect that. Should get about 44,000 sqft per tank. Anybody else--what flow rate are you getting? Ted, is this adequate for spraying weeds? How come i am not getting 128 gal per min from pump?