Straight from the Optimus Nova+ Manual: "The Optimus Nova+ has a burner designed to use petroleum-based fuels. Therefore, you cannot use alcohol-based fuel."

You can download the manual from the Optimus web site:

http://www.optimusstoves.com

The Nova+ will burn unleaded auto fuel but it's not recommended for three good reasons:

1. Erratic flame,
2. Excessive hydrocarbons produced,
3. Jet clogging requiring numerous cleaning.

It will however burn diesel, kerosene, white gas, & jet fuel very efficiently.

The plus also has the control surface for the heat at the bottle end of the hose, rather than at the stove end. Saves on some burnt fingers. Don't worry, the valve is still at the stove end; there is no delay.

Almost nothing. The hose is longer and it's 10g lighter and half an inch narrower (diameter).

Go for the MSR reactor stove.To answer the question: Multifuel Stoves like the Nova Plus work better in below-freezing conditions. Cannister fuel stoves are not as efficient in very cold conditions and as the more volatile contents are used up, they can become very close to worthless. However when you go higher in elevation: due to reduced atmospheric pressure, cannister gas stoves can work surprisingly well at low temps. I'm talking about noted improvement from 15,000 ft. up.The Nova series stoves are very fuel efficient because the flow of fuel is controled with a needle-like valve right where the fuel changes from liquid to gas under the burner. This also allows a range of flame control not seen in stoves that control the flame where the fuel leaves the bottle. Ray

It can stick a bit while the stove is heating up. Once it heats up, and especially when there is a pot on the stove, there are no issues with sticking or tipping whatsoever.

And it simmers like a champ. No burnt eggs, even when using karo!

Liquid fuel stoves have gotten better @ simmering through the years but they still have a way to go. Lower flame control is still erratic & can burn food if you're not careful. The Nova is a plate burner which is not as simmer friendly as a ported burner e.g., MSR Whisperlite. If simmering is your main priority, consider a canister stove which will also boil water faster. From Ray: As I noted in above question: the Nova, like all Optimus Multi-fuel stoves controls the flow of fuel with a needle valve right under the burner: where fuel changes from liquid to gas. I have not used the Nova or Nova Plus in real cold conditions, but the old 111B, which had very similar fuel control would simmer at any temperature. I could keep the flame at a candle flame, then instantly turn it to blowtorch. This feature makes it very fuel efficient. Ray

This stove has more output and can burn more fuels (the whisper lite international cannot burn jet fuel). This stove also has a better pot support system. The trade off would be gaining 4 oz in weight.The Whisperlite has much better simmer control. They both produce 10,000 BTU's.From Ray: I really don't want to argue with Jeff----but I have to. The Whisperlite has a lot of great qualities, but MSR went to the trouble of inventing the Dragonfly to have a stove with better simmer control and more stability. Please refer to my above question answers on the Nova +, then look at Backcountry.com's Nova reviews. The Nova + simmers Great!Ray

From the product "Tech Specs"Fuel Bottle: Not included