I have a 2004 KIA Spectra, I was driving home last night and a loud clanging noise started coming from the engine. I drove home, about five miles and checked the oil, it was very low, I added some oil and the clanging is still there. Have I ruined my car? no oil light ever came on and I have my oil changed regularly.....any suggestions on what this could be? The car has 25,800 miles. Thank you, Dana