Engine oil Castrol or AMSOIL

I just buy oil with the certs for my car. VW certs are prominently labeled on oils approved by them. I usually use Castrol or Mobil 1.

I’m definitely going to keep running Castrol Edge 0W-30 Synthetic European Formula. 10/10. It’s on the thicker 0W-30 side of things, so it really is somewhat of a 0W-35, it hits the spot when it comes to engine lubrication and protection when the engine is either cold or warmed up.

I've been using AMSoil 5W30 in my WRX since it was new (2003). Turbo is still good, and head gaskets lasted 17 years. I think it's worth the price.

I use Amsoil 0W20 but I’m a dealer. I have access to the test they run comparing it to Mobil and AC Delco stuff. The Amsoil is supposed to be better longer, but to me that comes down to your filter more than your oil.

I've been using the original castrol 10-60 oil and then more recently the BMW M TwinPower 10-60 oil for the last 10 years on my e46 M3.

I was running Castrol 0w30 European formula in my 07 323i and the car ticked a lot and made noises I’ve never heard it make previously when running 5w30. So recently I swapped to castrol 5w40 European formula and the car is whisper quite even on cold starts. It just sounds so much healthier.

Amsoil allegedly is the best. I use it in everything and no issues so far.

I've been putting in Castrol Full Sythnetic 5W30 in my 2.8VR6 for 13 years and I've been told the engine is in great condition (264,000 km).

I run Castrol 5w40 in all my VWs. 2.0, 1,8T, and my mk7 2.0T all have used it and I've been happy with it.

I've used mobil 1 20-50 for the last three oil changes and had really bad ticking noise from the head. This last oil change I used casterol GTX and have had a lot less ticking since. I'm no longer sold on mobil 1 for the rocco.