After a thorough pre-vac I'd pre-spray with Ultrapac Renovate, agitate with your Envirodri (if possible use white brushes). At this point the blacktop will mostly clear. Add Citra-Boost for really greasy areas, or just add anyway for a little more oomph.
HWE using F & F Rinse in the tank.
Obviously you will have to carry out the usual tests but this worked well for me on a filthy BW in an Indian Restaurant a few months back.
I can't really take credit though as I asked the same question and received many helpful answers via this very forum

Hope you've priced to include the moving around of all the tables and chairs, several times!!!