2007 Chevy 2500HD Crew mileage
Hi every one. I just completed a 567 mile round trip and the mileage was around 7.4 mpg. Empty around town or highway, im seeing 11 mpg. I'm starting to wonder if new plugs and wires are in...
Forum Discussion
Spark plugs should be done every 100k miles on these. Please use double platinum to lasts the next 100k miles. Besides that, flushing all the fluids would be good unless you know when they were last done.
