Mobil Oil rebrand, which one now?

[jonesy]

Hi,

I know this is a bit of a lame question but it looks like Mobil have rebranded their engine oils. I used to use 10/40 Super S but this now seems to be either Mobil Super 2000 Formula P or X1

Not to restart the 'what oil to use' debate, but does anyone know which is the replacement for Super S, should I use X1 or Formula P??

thanks,
J.

[brem]

From a webpage where I buy my oil:

Mobil Super 2000 X1 10W-40 - Replacement of Mobil Special S 10W-40