Well we purchased a Smoky lake fuel oil evaporator at the end of last season and I have to honest about it, I was not that impressed at all on the boil rate of the evaporator. We have the raised flue pan and SSR front pan. We tried different fuel nozzles and just couldn't get the boil rate up to par. We had three different people over that uses fuel (different evaporator) to try and help out and it just wouldn't do it. We where only get around 48-52 gallons and hour on a 2x8. I like their products and I think the wood evaporator's will do better from them but they need some work on the fuel oil evaporator's.