I too have a 2018 se and I use the liquimoly top tec 0w20.
Best Engine oil for Volkswagen Tiguan
The 2020 has been great but the engine still clacked and groan albeit nowhere near the 19. With the 0.5 quart of Castrol 5W50 I love the car now! Pickup is great and the engine being pettier seems to help the transmission shift better also.
I've been using Leichtlauf High Tech and its been working great, Just make sure it has the right approval and change it every 5k miles.
My oil cap says Castrol only, which is what my husband uses. We change the oil every 5000 miles using Castrol full synthetic.
I happen to use Castrol in all my gasoline powered vehicles and have had no oil related issues. Given that VW promoted Castrol and, more importantly, that I prefer Castrol in general, I’m staying with Castrol when I can... I've had no oil loss in the Tig with Castrol and see no reason to switch to a different brand just because some MBAhole behind a desk made a profit driven decision to switch suppliers.
Edge Professional 508 is excellent, however, I have to agree with @VWmechatronic , the Mobil 1 sourced stuff is top notch. Almost 5K on mine and level on dipstick has not moved.
Our Tig is coming up on it's 4th change (every 5K) and hasn't lost any significant amount between changes. So far all changes have been the 508 spec Castrol 0w20.
I recently switched from Liqui Moly to Amsoil recently, my wife's Tiguan seems to run a little smoother and is noticeably quieter at idle with the 5-40 European car formula.
US manual states 507 can be used, but you might get worse fuel economy... Mine is about 0.3 mpg lower on liquimoly toptec 4200 5w-3p
and the dealership where it got changed used 5w 20 motocraft they sell ford and thing of tht nature im pretty sure its to thin and wasnt synthetic
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