Hey guys. I've got what sounds like a mild knock in my 95 3vze. I noticed it after an oil change but it's possible I didn't hear it before. The dipstick looked a little low, so I added some more 10w30 and I think it got a little better.. You can mostly hear it when the throttle dies down..
http://youtu.be/SuAebzoVGk8

Let me know what you think? How worried should I be? No CEL ..