For probably going on 9 months now Ive had a weird noise coming from my rear end when Im coasting. I can be cruising at 30 mph and let off the gas and it's almost like a light buzzing coming from the rear. If I give it the slightest bit of throttle like just a tiny push enough to maintain speed the noise goes away. Yes the faster I go the more louder and high pitched the noise seems to be. I the rear diff fluid was changed a few years back but doesn't even have prob 12k miles on it. I did check it over the summer to make sure it was full and it was but it looked kind of greyish blackish, the grey is what bothers me. Anyways today I was out and about and decided to use my phone to try and get a video of it and when listening to the video on my phone I can hear it, so hopefully once its uploaded to you tube you guys can hear it too. Listen for it and let me know what you think, in the mean time enjoy the exhaust note!
Here's a link, sorry I tried the embed link from youtube and my brother and i havent been able to figure out how to embed a video on here from youtube to save our lives. Anyways let me know what you think and the beginning of the video you cant hear anything cuz its a bumpy street but after that you can, and you can hear it hum as I slow down to a stop too.