Was curious, did the math: 3-5K gallons * 6 cyl * 25 mpg = 450,000 to 750,000 miles.
removed my incorrect math re: dollars of fuel per engine
removed my incorrect math re: dollars of fuel per engine
5,000 gallons per cylinder * 6 cylinders * $4 per gallon = $120,000
If you're putting 5,000 gallons through each of six cylinders at $4 per gallon, that works out to $120,000 of gas. Certainly outweighs the cost of the engine by a decent factor.