can you convert synthetic to regular motor oil in a 2008 vw jetta?

[Pamela]

calls for synthetic oil can you use regular motor oil instead

 

[TheyCallMeNardo]

if it calls for synthetic, then you better use it or you'll void the warranty

 

[biganess]

i wouldnt synthetic oil is better for the internal seals of the engine and is better for the longevity of the vehicle. Obviously the manufacturer recommends it for a specific reason and the vehicle was tested with those limitations - stick with the synthetic