Is there ability to add some more angel's petrochem liquids/gases as methane, ethane, buthane etc. with such matched coefficients/ratio factors to burn them in oil-boiler to get the steam? Or can we get an checkbox-option to enable that fluids to burn if you don't want to enable them by default?

P.S. I also optimize your graphics from 4,36MB to 0,8 MB. Here you are: https://ufile.io/heaqq
Thank yoy for your GREAT mod! Playing with for years!
Best regards!

If the gases have a fuel value, then it should work out of the box

In the next version, the oil boilers are a bit different, so they will work without any recipes

Okay, thank you for your answer. I do some calculations (from wiki's MJ/m3 for gases and MJ/kg for liquids (excluding hydrogen)) and then some balancing. Maybe it will help anybody to improve mods. Here what i've got:

local fuel_values = {
["gas-hydrogen"] = "90KJ",
["hydrogen"] = "90KJ",

["liquid-multi-phase-oil"] = "180KJ",
["crude-oil"] = "367KJ",

["heavy-oil"] = "330KJ",
["liquid-naphtha"] = "330KJ",

["light-oil"] = "345KJ",
["liquid-fuel"] = "350KJ",
["liquid-fuel-oil"] = "375KJ",
["diesel"] = "375KJ",
["diesel-fuel"] = "375KJ",
["gasoline"] = "384KJ",
["kerosene"] = "359KJ",

["petroleum-gas"] = "350KJ",

["gas-natural-1"] = "280KJ", 
["gas-raw-1"] = "250KJ",

["gas-methane"] = "279KJ", 
["gas-ethane"] = "500KJ",
["gas-butane"] = "950KJ",

["gas-propene"] = "380KJ", 
["gas-ethylene"] = "400KJ",  
["gas-benzene"] = "1210KJ",

["gas-butadiene"] = "948KJ",
["gas-ethylbenzene"] = "1308KJ",

["acetylene"] = "468KJ",

["gas-synthesis"] = "96KJ",
["gas-residual"] = "350KJ",

["gas-methanol"] = "180KJ", 
["methanol"] = "180KJ", 
["acetone"] = "262KJ", 
["coal-gas"] = "146KJ", 
["syngas"] = "12KJ", 
["liquid-toluene"] = "1308KJ", 
["gas-hydrazine"] = "380KJ",

["gas-ammonia"] = "155KJ",  
["gas-hydrogen-sulfide"] = "182KJ",

["combustion-mixture1"] = "300KJ",
["combustion-mixture2"] = "300KJ",
["diborane"] = "300KJ", 
["refsyngas"] = "300KJ",
["xylenol"] = "300KJ"

}