TBH I always run mine on Unleaded and so 95 octane, I do occasionly put SUL in but don't see what all the hype is about as I never noticed any difference.

The 2WD when new run on Leaded, although the seats etc are hardened, so can run on Unleaded as well, but in any car when doing so as said your supposted to retard the timing by a couple of degrees IIRC (Again as said there are two connectors one for diagnostics and the other for minor timing trimming in the loom)

It depends if it's been mapped for SUL or not, if so take it easy when you use unleaded.

Martin