If it has a 305 around 15mpg If it has a 350 13-14
About 12 MPG. HWY. 10 in town
A 1987 Chevy Silverado has a 20 gal. fuel tank
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NO.
10-14 mpg is what my silverado gets
Fuel filter and clean oil may be a good idea, but your 8 to 10 mpg will not change.
My 2005 silverado crew cab /6.0 averages 15.2 mpg
19 hwy 15.5 city
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A 2007 Chevrolet Silverado 1500 gas tank holds 26 gallons of gas. The 1500 gets 14 mpg in the city, and 18 mpg on the highway.
depends how you drive it. if its a 1500 you could get 15-18mpg if u don't tromp on it
My 1998 C2500 gets 13-16 mpg.