Caltex Delo 400 - best oil for CRD?

[Watty]

I have been advised by various other 4x4 diesel owners to try Caltex Delo 400 oil in my CRD. While I am aware of the great variety of makes, Synthetic or non-synthetic, etc. I would still like to hear the opinions of fellow Liberty owners. Did a bit of digging on the internet and got good reports, especially here in South Africa. A visit to Caltex's websites also was worthwhile. The following link may be of interest re this topic:

http://www.caltexoils.com

Is the info given at Caltex advertising at its best?