huge unexplained whine

[Adrian's Vr]

hey so this morning as I turned into work my car started whining like a kettle, since then it will start doing it as soon as i got into 2nd or 3rd (T5) does not do it idling, still makes sound with clutch in and rolling in neutral, shifts ok, noticed it happens when its given load, when i slow down the sound slows to a disturbing scraping sound, when i speed up it gets to a certain pitch and stay and not get louder the faster u go, i drove it before just shifting early and like a granny and was fine till I slapped it in neutral and rolled to a round about then as soon as i braked it started going again, should note that I had to redo my tailshaft cv and centre bearing last week as a result of dodgy spring installs, big question is, is it my t5 dying ahhaha, also keep looking coolant, undid the bleeder and all that came out was steam, and brown steam