Guys, I have some questions. About pressure lantern.

I'm going to purchase this Coleman powerhouse dual fuel lantern that is going to burn through camping nights for many years to come.
Previously I've been sticking with the old but proven Butterfly lamp, but getting reliable supply of minyak tanah is troublesome nowadays (Coleman can burn RON95).

I find the downside for this Coleman burner is, its no.21 mantle is not as ubiquitous as butterfly whatever one, and it's even harder to get good old thorium version.

1. Can I just use the (slightly longer) Butterfly mantle in Coleman, but fold and tie it higher a bit? anyone tried this?
2. 1.5 liter petrol can burn how many hours on max brightness?

nvm I tried and it work.

Tie it higher and use steel wire to clip at the neck.
But this butterfly mantle produces lots of gunk during preburn unlike coleman/peerless, so you have to be careful pulling it away from generator before burning. Else it will stick to the metal and gets ruined.

Coleman cooler box worth it? Im planning to buy a 16qt box.
Is it better than cheap box out there?
or any better brands?

Im just looking for 1-day box.
Ive been measuring around seems like the 16qt one fits the balance best between amount of food to carry and dogs fit the rest of equipment.