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All depends on how much driving you do in a year and how long you are planning on keeping your new truck. I have already paid the additional cost of the diesel as my truck is going to roll 70,000 miles this month.
I have a friend with the same truck as mine except his is gas. I can give you the numbers he and I ran when comparing his truck to mine.
His 8.1L V8 gets 13mpg highway
My Duramax gets 22mpg highway
550 mile trip is the number we used
His 13mpg/550miles = 42 gallons cost @ 2.59 a gallon = $108.78
My 22mpg/550miles = 25 gallons cost @ 2.99 a gallon = $74.75 savings of $34.03 a trip
Using 15,000 miles a year
His 15,000miles/13mpg = 1154 gallons x $2.59/gal = $2988.86
My 15,000miles/22mpg = 682 gallons x $2.99/gal = $2039.18 savings of $950 a year in fuel cost
Cost of the diesel is approx. $5,500. Would take roughly 5.5 years to pay for the diesel if you drove 15k a year.
He tows a 3295RK and averages 9mpg
I tow a 3400RL and average 12.5mpg
My coach weighs approx. 500lbs more than his. Only you can decide if a diesel would be cost effective for you.
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