All the above advice is applicable - as usual! But it is a minefield ... it is not difficult to find a xW40 oil that will meet the VW504/507 spec, it is impossible. There are none ... only 0W-30 and 5W-30, in both "normal" and "long life" variantes. There are a number of topics debating the subject, mine theory is that VW geared the engines and the specs towards LL oils that are of lower viscosity and thus diminish emissions and consumption ... and probably fitted a "lighter oil pump" i suspect. The owners manual states: Petrol engines: VW 504 00, VW 502 00, VW 508 00, ACEA A3/ACEA B4 or API SN, (API SM) Keep in mind VW504/507 is the manufacturer approval, but not the lubricant specification, which is the ACEA A3/ACEA B4 or C3 for Diesel ..... a good oil matching that should be equivalent. You also have to cross-check the "approvals" for example, because an oil corresponding to 504/507 like the Edge 0W-30 or the Shell Helix Ultra are both "approved" 504/507 but then are C3 which is NOT listed in the OM as the spec for petrol engines ... since are NOT A3/B4. Yo should also cross-check with relevant other approvals, like equivalent MB 229.51/229.52 or Porsche C30, because it is not a given that the same oil manufacturer "offered" to all car manufacturers their oil for "approval", of they might not be in bed with them to promote a specific product/brand! Like see the French with their Elf/Total, Fiat with Agip and so on. If all this has been enough to give you a headache, you're welcome! I have never been so confused by something so simple in an industry that has managed to complicate even the simpler aspects of their basics! For now and the cold season, I found a good offer for OE VW LL in 0W-30 and will put this, then when the hotter period comes will think again ... Probably the Fuchs Titan SuperSyn in 0W-40, which is not 504/507 but it is A3/B4 Here are the specs to compare with the OE oils, I would do it now but the dog is dragging me to go take her for a walk 😁 https://www.vantagelubricants.com/upload/product/declaration/gbr/pds/SSLL04.pdf