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2009 Cobalt Tune Up Questions????

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Hi Guys, Air Jer

I have a 2009 Chevy Cobalt with 125,000 miles on it. I would like to give it a “tune up” but now days a “tune up” is so much different than 20 years ago. What can “I” actually do other than change the spark plugs and air filter, which I change the air filter every 25K anyway so I don’t really consider that a tune up type thing.

What else can I do to keep the mileage up in the 35+ range??

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