It's a good feeling. My old 7.3 did that about 12 years ago.
2000 silverado 4.3 vortec, bought ‘new’ at 18k miles in 2001. This truck, Betsy, as we call her, has been a great truck. Showing her age but still going strong! Gonna drive it till the wheels fall off!
That is all. Carry on.
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About 20 mpg since new.