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Fuel Economy Assessment

1:13
22:21
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At 1:13 in

Former Million Dollar RV TRUE Cost of Ownership: My 1996 Newell Coach Experience! (10K Miles So Far)

What happens here

The presenter discusses the fuel economy of the motorhome, which has a 300-gallon fuel tank and an analog gauge. He estimates approximately 7.8 miles per gallon (mpg) under ideal conditions (flat terrain, no headwind, and driving slowly at around 60-65 mph). He compares this to typical semi-truck forum estimates of 6-7 mpg for Detroit engines, noting that his motorhome is lighter (40,000 lbs) than the 80,000 lbs its engine (Detroit Series 60) was designed to haul.

Goal: Estimate the motorhome's fuel economy and discuss its implications.

Tools and materials

  • 300-gallon Fuel Tank — Storing fuel for the motorhome
  • Analog Fuel Gauge VDO — Indicating fuel level (with limitations on accuracy)
  • Detroit Series 60 Engine Detroit Diesel — Powering the motorhome

What they say

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you exactly why. You're probably wondering, the first question is: what's its fuel consumption? I don't know. Okay, I don't know. It has a tank of about 300 gallons. Good. 300 gallons. And it has an analog sensor. This is the 94th. That is, it is the 96th, but in fact it is the 94th. Sensor from 1994. So that's what I'm going to call things here. It was built from parts from 1994. Yes . It does not calculate such data. There's a Detroit Series 60 engine there. The best truck engine ever built. It doesn't have a lot of computer electronics. This is a DDEC 3 system. Maybe the computer does some calculations, but I don't have a monitor for that. All sensors are fully analog. This is a type of sensor that when you turn it, fuel flows to one side and the needle rises. They are old school, like military sensors from the Cold War era. But they do their job . I mean, I think they're accurate. I've heard that, you know, some water temperature sensors and so on aren't very accurate. Therefore, the Silverleaf system is better. this is what plugs into the DD unit and works like a real monitor. But I do n't have that. So you have to look at it. Here is the fuel level sensor. I would assume, based on my experience, if you drive slowly and on a flat road. I mean slowly, like 60-65 miles per hour, on a flat surface and without a strong headwind. If my calculations are correct, I tried to fill it completely. I filled up to the brim before leaving, drove to the middle of Arkansas, and filled up to the brim again. I tried to get the most fuel economy possible, and the calculations showed 7.8 miles per gallon. I don't know if that's true. Perhaps. From what I've seen on trucker forums, these Detroit engines get about 6-7 miles per gallon, or 5 if heavily loaded. But you

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