squeak

Hi, Need to fix down some wooden floorboards - about 20mm thick. Believe I need 50mm screws but says online avoid where the shank is fully threaded. Got some with smooth shank at top but it was 20mm of smooth so took back and swapped, now there is no smooth part. Apparently the fully...

Recently I have noticed a squeaking / screeching noise on my Vauxhall Astra. It seems to be getting louder and I'm not sure what is causing it. I can't figure out which area (front/back/side) of the car the noise is coming from. It sounds like two metal pieces could be 'rubbing' together, but...