Engine oil Castrol or ELF

Change my e90 n52 every 15k, castrol titanium 10w-40. blackstone reports confirm the oil still meets spec with plenty of detergents left. Showing no signs of wear at 170k.

I just run castrol edge on mine. No issues.

I myself use Castrol Edge (in 0W20) for my GJ. But I add a bottle of Lubro Moly MoS2, for that added molybdenum (mimics OEM moly infused Mazda 0W20).

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.

And one thing I would definitely do is get the Castrol out of there if you intend to keep the car long-term. The recent changes to the oil we are delivered at the dealer is crazy!!! It's not the same as it used to be and I can tell a huge difference in my cars. Have had excess oil consumption, lower MPG and quicker deterioration of the oil over last 6 months using Castrol(and I work at dealer)