Hello Australia!
according to MSR stoves, white gas may be called "shellite" down on top of the world.
Svea stoves?
Yes, I remember those. Pour on the gasoline, stand back and throw a match, and produce amazing amounts of heat and noise.
MSR Simmerlite?
Love it. I am a comfort tourer. For me the adventure can come in a lovely meal involving sauteed onions and vegetables carefully prepared and enjoyed at a beautiful camp. My MSR Simmerlite does everything I want it to do.
White gas vs. unleaded?
Here's what MSR says about the fuels: "Always look for MSR White Gas -- the highest quality fuel available. Other common white gas brands include Coleman, Crown and CampLite. Unleaded auto gas may be used in your stove. However, additives will lead to rapid clogging, making frequent fuel line cleanings necessary. Do NOT use leaded fuels! " Setting aside their plug for their own brand, the issue seems to be the additives that might be added at the automobile pumps.
Happy cooking (and eating) everyone!