In the cozies thread, Preacher linked to Zen Stoves. Here's a page from the site on stove fuels if it helps.   (You need to Login or Register

On my last trip I was using three a (possibly four) year old gallon of Coleman. Maybe my stove needs some attention but I had to pump it a lot during cooking. I still have two pints left so I'm kinda hoping it was the stove.

For those who burn unleaded. Does it smell much?