I was wondering if I need to have a oil change or does my 05 Trailblazer suck up gas. I start my day with a full tank of gas and drive 70 miles roundtrip and I may eat up about half a tank of gas.

Asked by Mar 16, 2015 at 07:04 PM about the 2005 Chevrolet TrailBlazer LT 4WD

Question type: General

2 Answers

110

A oil change won't help that problem you should have a shop scan it to see if there's any other problems.you should be changing your oil every four to five thousand miles. .

58,735

If your Trailblazer has over 100,000 miles on it you're due for a tune up. Check your air filter. Is it dirty? Are the brakes dragging? Is the transmission shifting into overdrive and is the torque converter clutch locking in? Are you towing a trailer or other heavy load? These are all things that can negatively affect gas mileage. HTH. -Jim

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