Welcome to GS
There's actually another member here, ELF, who has his Sable up past 30 mpg...
Check out the Garage and Gaslog:
The Sable.
He may be able to provide some insight into how to tweak it and drive it.
I'd start with the usuals -- tire pressures, slow cruise speeds to less than 60, use a feedback device like the ScanGauge, etc. As you become more comfortable: aero mods, grille block, and driving style changes can help significantly.
Check out the FAQ/Stickes in the General FE Forum for ideas. If you have any questions, we're here to help
Best FE,
RH77
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