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Old 11-17-2010, 12:24 PM
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Originally Posted by sqzbox
I did the math and this is what I came up with.

save a gallon a day @ $2.75 a gallon (soon to go over 3 bucks)X 365 days = $1003.75. Keep his budget under that and he can get payback in 1 yr.
Would that be considered a long payback period, or am I missing something?
Your math is right, but your assumption isn't realistic. Let's say we take his MPG from 15 to 17. Now let's say he drives it 50 miles per day. He's only saving about 1/3 gal a day.

So, he's saving about $0.88 a day. If he spends $1000 on upgrades and uses the truck 300 days a year (6 days a week minus holidays) that means a savings of $264 per year. It would take nearly 4 years to recover his costs on fuel.
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