Grob Driver nice to see a convert from plastic to fabric!
The Cirrus in my Autocrat burns 4.5 gph, Gipsys burn around 6-6.5 gph. I would assume the Lycoming burns around 5gph.
A good Cirrus uses about 0.5 - 1 pint / hour, a Gipsy without the oil ring mod can use 2-2.5 pints / hour, with the oil ring mod it drops to the same as the Cirrus. I assume that the Lycoming would be about the same as the Cirrus.
If you want a whizz about in a Cirrus powered Auster, PM me.