Possibly, but only slightly. You will see less than 1 mpg difference and you may not see any negligible difference. Depends on how you drive and condition of the vehicle. Lots of factors come into play with your actual mileage.
The Chevrolet Silverado's gas mileage varies from 14 (in cities) to 20 (on the highway) EPA MPG. It is of course possible improve your mileage by, for example, changing oil. Most synthetic oils should help you improve you mileage.
no
Try the Amsoil synthetic gear oil it will improve your mileage and reduce heating when you are towing
The EPA mileage estimate for the 2001 Kia Sportage is 16 mpg in the city, 20 mpg on the highway.
The EPA mileage estimate for the 2014 Kia Sportage is 21 mpg in the city, 28 mpg on the highway.
The EPA mileage estimate for the 2008 Kia Sportage is 20 mpg in the city, 25 mpg on the highway.
The EPA mileage estimate for the 2009 Kia Sportage is 20 mpg in the city, 25 mpg on the highway.
The EPA mileage estimate for the 2011 Kia Sportage is 21 mpg in the city, 29 mpg on the highway.
The EPA mileage estimate for the 2002 Kia Sportage is 16 mpg in the city, 20 mpg on the highway.
The EPA mileage estimate for the 2007 Kia Sportage is 20 mpg in the city, 25 mpg on the highway.
The EPA mileage estimate for the 2005 Kia Sportage is 20 mpg in the city, 25 mpg on the highway.
The EPA mileage estimate for the 2012 Kia Sportage is 20 mpg in the city, 27 mpg on the highway.