Owner reviews for engine oil

I used Castrol GTX 10W-40 High mileage and never had issues.

Pennzoil Ultra Platinum or Castrol Edge are probably the best all round oils.

Whatever full synthetic is on sale, last time it was Rotella T6 15w40, every 5k.

I run t6 15-40 in my 07 lbz with the cat oil filter adapter.

I’ve been using t6 with pretty good lab analysis but I’ve been considering switching over to amsoil.

I bought this unusual oil made in Germany Ravenol NDT 5W-40...my truck has never sounded or performed better. I was hearing a little bit of top end noise at idle and that's complete quieted with this oil, as well as throttle response and overall smoothness of the engine and turbocharger increased greatly.

I put 5w40 in mine, that's what is recommended for mk6 at all temps. Summer or winter months. I use Castrol Edge Full Synthetic high mileage, works a charm.

I run Amsoil 5w40 warmer temps and Ravenol 5w30 colder temps.

The 0-20 Castrol VW Spec oil I buy from my dealer is cheaper than any 0-20 from Walmart or auto parts stores. My 2019 GSW has 16,000 miles and uses next to no oil between changes. I have averaged over 40 mpg for the 16K miles.

I’m using penz plat though I’ve only had my oil changed once (3500 on my OD) but so far so good. My oil temp stays around the 200 mark once fully warmed up and has been running very smoothly.