I had someone change spark plugs for me, he recommended that I NOT put in the platinum plugs, so copper plugs were put in. Afterwards the engine started knocking really bad. He said it was out of oil after that, I don't believe him. In the 5 years I've had this truck I have never had a problem with the oil. Any thoughts or suggestions?
Sunday, June 9th, 2013 AT 4:58 PM