Whenever I see Britelyt brought up, I feel it's my duty to point out that the manufacturers are idiots and begging to be sued into poverty. The Petromax/Britelyt lantern is not designed for nor safe to be run on anything more volatile than kerosene. Yes, they will put out light on gasoline, but not safely.
Gasoline lanterns:
1. Have a positive fuel shutoff. If there's a problem you can turn a valve and shut off the lantern, right now. The way you shut off the Petromax/Britelyt is by venting tank pressure from a vent in the fuel cap. Think about that again, you have a lantern that is having a problem, and the way you turn the lantern off is by venting air laden with gasoline fumes and vapors............right next to an ignition source, the burning mantles. Brilliant.
2. Do NOT have a way to vent tank pressure to atmosphere. See #1 about why this is a bad idea. Sure you can remove the fuel cap to vent pressure, but there's no need when you can just use the valve to turn the lantern off.
3. Have dual redundant check valves on the air pump, both would have to fail for pressure to be vented from the tank through the air pump. The Petromax/Britelyt have one check valve.
4. Have an air pump that exhausts it's air through a tube that goes above the fuel level. Should both of the check valves fail and tank pressure vents through the air pump, only the air on top of the fuel will vent. Yes, this is a problem, but not nearly the problem a Petromax/Britelyt would have under the same circumstances. The Petromax/Britelyt air pump has only one check valve, and exhausts it's air at the end of the pump, right into the fuel. Should this one check valve fail, not only will pressure vent out the pump, but it will push all the fuel out first....right next to the burning mantles.
Adding a metal plate between the mantles and the tank does not fix any of the above issues, regardless of their claims. Adding all of those safety features would not at all interfere with the use of kerosene or diesel. Coleman's kerosene lanterns all contain those features, simply for the sake of parts commonality.
This is not to say that Petromax/Britelyt lanterns are not fine workable safe lanterns with kerosene or diesel, whose flash point(the temperature at which ignitable vapors will evaporate from a given fluid) is 125 degrees F or so. However, they are bombs waiting to go off when used with gasoline, whose flashpoint is -40F, or alcohol. You have to try to set yourself on fire just to turn them off when using a volatile fuel.
On topic:
Any fuel-powered lantern will provide heat in addition to light. Propane is the easiest/cheapest to use, but I find my gasoline or kerosene lanterns are much brighter than propane even though they use the same mantles. All are solid performers, and I heartily recommend Coleman. I've bought lots of Coleman lanterns and stoves for $5 at garage sales and had them running merrily in very short order. Parts are still available for just about every product they've ever made, and I have little doubt they still will be in 100 years if your great grandkids need something for grandpa's old lantern. If you plan on using your lantern in temperatures below freezing, I'd steer clear of propane as it won't evaporate out of the tank when temperatures get down into the teens.
Please excuse my rant above, but take my warning to heart. :buddies:
PS: I also won't support Britelyt for lying so blatantly about such a serious subject that has been brought to their attention repeatedly. If I were in the market for such a lantern, I would make sure it was an original Petromax and have nothing to do with Britelyt.