Hi please help. I have a Kodiaq 1.4TSI DSG 4x4 (2018) on a variable service plan. It says in the manual that the car uses VW508 (0w20) but Skoda customer services say we should use 5w30 oil standard. We don’t need any oil now but just plan to get some in to top up when needed, please can someone advise on what I should buy? Thanks