Depending on what you are looking to accomplish, there are many different oils you can use. Valvoline 5W40 synthetic, mobile 1 synthetic, 5w40 Castrol synthetic are all good choices.
Recommended engine oil for 2.0 litre TFSI engine on VW Golf GTI is Mobil1 5W30 or Mobil1 0W40. You can use a different brand with these viscosity ratings, but make sure it is FULLY SYNTHETIC,( NOT A SYNTHETIC BLEND or a mineral based oil). I've researched and asked VW service departments because I own a 2007 Golf GTI and it's a MAGNIFICENT car!
3.5 liter
cal vw or your local parts store and they will tell you.
Low or no oil pressure. Can be low of oil, a failed oil pump, or other problem.
in the oil sump, and is chain driven
About 4 letres
about 4qts
49
5W30
Dipstick should be marked
Turn counterclockwise.
It's deff not fun to do man. Will smoke or moisture out of exhaust oil will be on side of engine from it leaking off.