Hi. I'm new to this forum. Thanks in advance for any help guys. I have this highly irritating noise on my Landrover 4. It started off mostly rearing its ugly head when going downhill after I took my foot off the accelerator. It now however is worse and even whines when I put my foot on the accelerator. It is intermittent and comes and goes. I have attached a two minute video of the sound and as you can hear, in this particular clip it goes away on its own. But ... It does come back again later...any help in identifying the source of the noise will be greatly appreciated. Please find a copy of the video here as it is too big to post on this forum https://www.dropbox.com/s/890ckuvdorlwefv/20180430_130139.mp4?dl=0