Re: 1998 johnson 225 Oceanrunner fuel consumption vs 1995 Johnson 150 fuel consumptio
are they both 90 degree motors or is one of them a 60 degree motor or a fuel injected or 4-stroke?? Generally speaking if you run the same speeds that you were with the 150 you should get close to the same fuel milage, but if you will run faster it will cost you some MPG. Also the 225 is about 75 pounds heavier, that will have a small effect also..rule of thumb for is 1 gallon of fuel consumption for every 10 HP at full throttle..I have found this to be pretty close for most every carbbed motor I have owned. so if this is true 150 at full throttle will burn 15 gallons per hour and the 225 will burn approx 22.5 gallons per hour, but you should go further in an hour because of increased speed, but you will most likely burn more fuel with the 225 than the 150 if you go the same distance, providing both motors are in good operating condition. I am assuming you are using the SAME BOAT also or you can just throw this all out the window. bigger boat + bigger motor = bigger gas bill.
