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Reading spark plugs and slight rough idle troubleshooting
Hummer H3For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.
Simple math: worn spark plugs can cause up to -30% fuel efficiency.
H3 as advertised up to 14 city / 18 highway!
US GAS national average today: $3.188 x -.30 = 95.64cents
4 empty to refills can cost you more in fuel efficiency loss than a new set of spark plugs.
23 gallon capacity, empty to filled = 23x$3.188= $73.32 - .30=$21.9972 possible 1 tank fuel loss on a worn set of spark plugs.
