mobil 1.

Realistically any oil is fine, as long as you change it in regular intervals. (I use Mobil 1)

Ive been using kendall for some time and its been holding up better than Mobile 1, color was yellower after 4k miles

It's a "full synthetic" by the definition that the oil industry uses, but it's a Class III synthetic. That basically just means it's not a synthetic blend... but doesn't mean that it's an elite quality or Class IV/V synthetic.

+ 1,000,000 on that.
After exensive research I came to the exact same conclusion. They put it on sale at Auto Zone including a high quality oil filter for about 30 bucks. I have stocked up lots of it.

So, how often should you change your oil if using German Castrol?

thanks

I do mine at about 3700 miles. I'm sure I could go a LOT longer, but there's no need to push it. I also do a lot of short trips and back roads driving, about 6 miles each way to work... those are a lot rougher on your motor oil than longer trips and highway miles.

After seeing the above

I went with Castrol Syntec it always goes on sale and protects well. Been running it since my first oil change when I got my car.

^ good call. I'm a scientist by profession, and for me, empirical evidence will always beat out subjective ones.

What is Mobile 1 Extended Performance, Class III still? Its rated at 15,000 miles which I would never try.

now im deciding between mobil 1 and castrol XD

Weekly bump

Castrol Syntec or Mobil 1

I do every 3,333 on my turbo Subaru only because it's a highly modified application.

I also used to run it on a honda civic and had several UOA's done by Blackstone. The first one I sent them at 3,500, they said it had a lot more life and to shoot for 5K next time. I sent them the oil after 5K and they told me to shoot for 7500 miles and noted that if that looked good to them after that, I might want to try for 10K. I just stuck with the 7500 as that was good enough me.

I plan on changing it every 5K in the G.

Mobile 1 full synthetic