Re Screeching noise.
I find it very un pro to suggest putting white grease on belts, if there is a noise then it needs to be investigated, plain and simple. I would remove belt, replace tensioner and idler berings, very simple 5 min job, then check water pump, atly, power steering and vac pump for smooth operation of movement, if any show the slightist hint of drag or wear its time to replace as it will likely be the problem, using branded belts as a replacement is a must, fong kong junk is just that as every one is on the band wagon when it comes to parts, duplication of them is a simple process but its the low quality that goes into them, belts is one of them in a big way.
I would check as above and then repalce belt even if if still looks ok, toss it under the seat from in case as its ideal to have one spare along with a few minor tools
Custom interior, MK6 MWB RWD 90PS 2000)...220 000miles, parked up for 3 years rust free