Lots of people ask about fuel burn here. I originally found this site looking for the same info. Anyway, after acquiring both the MEP-802A and a MEP-803A, I performed the consumption test similar to the guy that post the YouTube video. He openly noted a cold running engine. I believe his had a thermostat issue and had taken it out. i read many comments that his results wouldn't be accurate from the lost efficiency. I think my results are pretty close to his.
Both of my units were made in 2010, the 802 had 10 hours and the 803 had 7. Both are LTT mounted and acquired this year from GP. No reset tags and clean, straight units. Thinking both engines are still new, they were filled with Break-in oil, new filters and rubber lines. For those wondering if it could be done, I performed all maintenance without removing the top cover (including the 802A return line.)
I used a simple one gallon clear plastic windshield washer fluid jug. Made marks with a sharpie every 8 ounces, while filling using a 8 ounce measuring cup. The supply line was attached to the main pump and ran through the bottom center vent. The return line was extended and also run through the bottom center vent. both lines simply shoved in the top of the jug. I ran the lines through the bottom so the doors were shut and the unit had designed air flow. Engine was warm and run at test load 10-15 min before the test time started to help normalize the operating temps on each load. Ambient temps varied little and in the 70's for all test. Test times were limited to less than a gallon consumed. That made them range from one hour to three hours.
Load used was a self designed system of water heater elements installed into the side of a 19 gallon plastic tote. (2) 4500 watts and (1) 3500 watts elements. A constant flow of water was supplied near the bottom and flowed out through holes drilled near the top, opposite the side of the element connections. Water flow was monitored to maintain 125F out flow. Two,plug-in room heaters were also used to reach target load. Voltage set to 240 and checked several times during the test. Wattage also conformed using a clamp-on meter.
Results for 802A
.25 gph at 600 watts
.28 gph at 1000 watts
.35 gph at 2000 watts
.45 gph at 3500 watts
.60 gph at 5000 watts
Results for 803A
.45 gph at 2000 watts
.50 gph at 3500 watts
.60 gph at 4500 watts
.90 gph at 9000 watts
These are constant load numbers from my generators on fresh fuel with 2 cycle oil mixed in at 100:1. Your burn rates will vary.
I wanted to to give back to this site and say thanks to all that provide info to others. No matter how little someone gives. It matters.
I'll also add the Champion 2000 inverter genarator used .18 gph at 800 watts.
