Engine oil Castrol or OEM Volkswagen

Been running Euro blend Castrol a few years and happy with it. Engine is getting close to 200k, modified, driven aggressively. I'm sticking with works for me.

been using Castrol edge 5w-30 for the past 5 years My WRX engine still feels responsive but i know 5-40w is good overhead for high temps

But the Castrol Syn was good too.

I've used Castrol GTX in my E30 for a decade now.

E39 S62 (M5) engine - used both castrol 10W60 and Liqui Moly 10W60.

Just updating! I used to put Castrol Magnatec 5w40 on that Golf, and the engine just improved from day one. Much smoother and with greater response to throttle, and the engine start got like 2 seconds faster, almost instantaneous.

I bought a 153K kilometer 81 1.6 GTI and drove it for work to military bases all over Germany. With no restrictions I ran 160-190 kph as much as possible for a few hours at a time. It always used a little oil but I kept it changed with 20W50 dino oil and sold it at 280K still running fine.

I use castrol edge advanced full synthetic on mine works fine I change it every 6.5K on my 21 5.0

My oil cap says Castrol only, which is what my husband uses. We change the oil every 5000 miles using Castrol full synthetic.

I was using the OEM Castrol 5w40 and recently switched to Castrol European Formula 0w40. I found that I had the oil level drop a bit (oil burn perhaps) with the latter. For the current change I went back to OE Castrol and will see if things go back to no level drop.