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mpg drop
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  1. OEM Issues
    I got a trailblazer for my Son paid 4K total it had low mileage and looked fairly clean inside. There were a few things I knew about like New shocks, rear trailing arms i had to fix then found it needed valve cover gaskets because there was oil on the spark plug boots, then new front hubs and...
  2. General
    I've searched all over this site to find a similar situation or cause, to no avail. I just cleaned my very dirty throttle body and now it seems my MPG dropped by at least 2 MPG. I was getting over 17 MPG and now I'm getting 15MPG combined. After the throttle body cleaning I also put new plugs...
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