John Roberts Motors (Chevrolet Dealer) in Gunnison, Colorado was asked to change my oil and replace spark plugs. They checked my air filter and pronounced it "good". Three days later I discovered at another repair facility that they had left the (dirty) air filter cover loose and hanging in the breeze. When John Roberts secretary called asking how was my service, I told her. The new owner called and told me that if I asked specifically, he would refund the portion of my bill related to checking the air filter. I declined to... read full review »