I have a serious Lister diesel fetish.... in fact, I just had to (very very reluctantly) sell 4 just to make some room... I kept my Start-o-Matic engine/base and a spares engine though...
I also have an old Villiers-powered ex-Army compressor. The engine's pants, but the compressor is great.
I had originally planned to run at least a compressor from the Lister(s), now that I have a supply of chip fat from a nearby restaurant, I think I'll invest in some biodiesel kit, and use the resulting fuel to reduce my electricity usage - or, if the centrifuge ever gets built, I might even have a go running the thing on neat waste veg oil.
As usual, too many projects, not enough time - and, currently, nowhere near enough space....