Fuel Usage / Loss

[catboggs1]

I have a 1978 Evinrude Model 55875S, 55hp that seems to run well. I question my gas usage, as I use 3-5 gallons in a typical 12 mile loop on my 20ft pontoon boat with average weight (2 dogs, 2 people, minimal gear). I noticed when docked, there was a gas ring around my motor, although I did not see dripping. For the environment I have my concerns, as well as my fuel usage.

Your thoughts?

I had the lower unit, gear case, and water pump replaced. The mechanic did a full tune up, I believe he said on two carbs. A new fuel tank (portable) and fuel line were also added.

[sunrisehimlam]

Đất Mặt tiền HTP nh�* bè 5*40 thổ cư 154m2 giá 3,9 tỉ tluong chút tiếp khách thiện ch�* MTG -QC, Lhe Mr Tâm 0936386879