CDX825
filtration nut
Your mileage may be showing low because of tire size. Any idea how accurate the speedo is?
Last time I checked, which was a trip from Pittsburgh PA to Gastonia NC and back, I averaged a bit over 18.5mpg. That was on 285-75/16s. I'm running 235-85/16s now, so I'm hoping to get a little better. Going from a 32.8" tire (technically) to a 31.7" tire might hurt a little, but the reduction in rolling resistance should hopefully make up for it.