northern
Well-Known Member
- Jan 17, 2007
- 3,525
- Boat Info
- 380 Aft Cabin 1989 Charts Timezero radar Furuno
- Engines
- Twin 454 strait shaft
We have 2,900 hours on our twin 7.4s. We normally cruise at 1,300 to 1,400RPM. At that RPM we go 6+ knots and burn 6GPH. A few times were we had to go faster. At 2,200RPM we burn 16 GPH and go 9 knots. About once a year we go 18 knots and burn 55GPH.
We have burnt around 18,000 gallons in the 2,900 hours. If we had gone 2,200RPM and burnt 18,000 gallons we would have 1,100 hours on the engines. If we had gone 18 knots we would have 325 hours on the engines.
Question: Do people think one should look at gallons burnt rather than engine hours?
We have burnt around 18,000 gallons in the 2,900 hours. If we had gone 2,200RPM and burnt 18,000 gallons we would have 1,100 hours on the engines. If we had gone 18 knots we would have 325 hours on the engines.
Question: Do people think one should look at gallons burnt rather than engine hours?