Lol no thread is safe, not when the golfgti terrorist squad is about
I would always use quantumOn the 1.8t I'm using the platinum 5w40I wouldn't use anything else. Changed every 5k. I changed the pick up pipe 1k ago and the block was clean. You'll only get that through regular changes with quality oil. Bloody cold weather combined with 10 minute journey to work is starting to build up mayo in the breathers though.
Just any good sump sealant mate, Il have a look what one I used over n over n over again later for you lol Smashed and cracked sumps for a laugh on the Bora. Well it werent funny at the time
Drop the engine oil out, Undo sump and remove from block, Undo 2 X 10mm bolts for the oil pick up. Replace the oil pick up pipe and reverse the above job done. Ensure you have good sump sealant as 1.8t's dont use a gasket.