Engine oil Castrol or RAVENOL

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

Absolutely always use mazda filter and the owners manual says use Castrol which the three local Mazda dealers use this I also go with it. Over 60k miles with oil changes anywhere between 3k-6k and still runs great.

I use Castrol GTX 20W-50, same as what the manual calls for. I know the oils changed since then but the previous owner didn't care for the car properly so I feel like the detergents are necessary.

I run 5w40 syntec and I eat about 1/2-3/4 oil every 5,000 miles. It will eat it more if I drive it really hard.