Engine oil Castrol or Shell

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 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 used to use Mobile1 in my vehicles but switched to castrol edge only becuase mobile1 didn't have very good flow rates at startup in colder climates (like Michigan) as castrol had. Plus it's recommend for asian vehicles and I drive Nissan and Mazda.

Castrol Edge Extended Performance 0W-20. Haven’t had to change the oil yet but I will around 7500 miles for peace of mind.

After tuning. Castrol edge 5w40 and 6 months or 5k.

Figure the changes are cheap insurance.

In the desert, I use [Castrol Euro 5W-40] - it's easy to find everywhere and pretty cheap. It's technically only an API SN, but the actual test results seem to indicate it exceeds SN+ requirements in most every metric that matters

S52B32, 5W40 Rotella T6

I use rotella 15w-40 in every vehicle I own. From my Miata to my XJ, no issues

I spent ages today on the phone to numerous SEAT dealers, VW dealers, SEAT HQ, VW HQ, Castrol and Millers. The bottom line is total confusion everywhere. I rang 12 SEAT dealers - all but one (I'll come back to which one)said that VW 505.01 must be (and is)used.