Svea was bought up by Optimus and turned their " Legendary 123 " into the Svea 123R with the addition of a built in cleaning needle. Older 123's are most sought after these days , but the newer version works fine. If you must use unleaded auto fuel instead of Coleman fuel/white gas,, make sure to use the lowest octane at the pump. Thru-hikers in the old days burned unleaded auto gas for months, but it is more toxic and can ,with time clog up your internal wick. ( Or if you use high octance ,blow out your safety cap or or stove! )