I have a 2002 chev silverado with 100,000 km on it with the 4.8L and auto trans. I consistantly get an average of 12.5 mpg. I still have original spark plugs, air filter (filter vacuum gauge is still in green area) fuel filter etc... The truck runs perfect so I see no need to start changing things like these and the manual does not say to in there maintenance schedule. The epa estimates for that truck are 18 city/22 highway. and I do about 60% highway. Is this normal and the estimates are inflated?
- posted
18 years ago