I did my first oil change on my car today(2400 miles) and I'm glad I did. I decided to pull the plug on the oil change early because I noticed the oil was a bit dark when I was checking it. I used a Mobil 1 oil filter and Motorcraft 5w20 synthetic blend and the engine is running so much quieter now! It really is ridiculous how much quieter and smoother the engine is now. Well I just wanted to share my experience with you guys. Thanks.