Do you mean 5.0 or 5.7? We have a Carver 28, aft cabin with twin 5.0s. We use about 11 gph per engine at a cruise of 22 mph. I belive the 32 would be similar.
We are looking at a 1984 28' Carver Voyager /Mariner with twin 350 MerCruisers and are looking for fuel consumption information. Thank you in advance for your quick response.