radek wrote:I use white spirit ... refined paraffin, in mine and there is always a diy shop somewhere ....
Are you talking about the white spirit used for cleaning paint brushes? I got 5 litters if it from B&Q. I thought that white spirit in UK equals white gas in US ! It does burn, but this staff smells very very nasty. I also think that over time it could damage the stove. Paraffin on the other hand burns lovely and does not really smell much.
I use "white spirit used for cleaning paint brushes" in my old Primus brass pressure stoves. It's readily available in supermarkets and general stores in 750ml bottles for about £1.50 - not as cheap as 5 litres of paraffin but still cheaper than anything else except found wood. It burns beautifully cleanly, and to my nose is actually less smelly than paraffin. "Turps substitute" would also work but IMO it really stinks.
The only disadvantage is that you should prime with meths - take some in a squirty bottle such as one of these. You can prime with paraffin/white spirit but it makes a sticky, smelly, sooty mess and is not very efficient - which presumably is why the Omnifuel instructions are so dismissive of it. However vapourised paraffin, i.e. under pressure - is very clean, and also hotter than petrol. Note that you need the .28mm jet.