I've burned quite a bit of gasoline in a Whisperlite when traveling by motorcycle (avoids the need to have 2 different fuel types on a long trip). It seems to burn "dirtier" than white gas, so the stove accumulates more residue and needs to be cleaned more often, but I have never been unable to fix any issues with the standard MSR cleaning procedures. I would expect kerosene to be similar, and wouldn't hesitate to use it when appropriate.
I still default to white gas for "normal" camping and climbing usage, to minimize the aforementioned cleanliness issues.
Note that the Whisperlite Internation used to be the stove required for multi fuel use, and has a different nozzle for kerosene.
I have burned gasoline ( higher octane the better) in the whisper light international on many foreign trips. It it is a little bit dirty when priming but you can overcome that by priming with isopropyl alcohol or mineral spirits. I carry a 2-3 ounce bottle with a squirt cap and fill the cup under the burner and light. When the alcohol burns off open the fuel valve the stove is primed and ready to go. Alcohol is available at pharmacies from 70-99% concentration, the higher is better but either works. My limited experience with kerosene was that it was much dirtier and a total PITA. With gasoline , I leave the white gas jet installed.
Unfortunately gasoline will not be an option. Isobutane canisters are easy to come by but i’m trying to get away from having to use them in base camp. Plus a huge pain to transport (hazardous cargo). Kerosene is pretty much the only liquid fuel i’ll be able to get. It’s likely going to be pretty dirty fuel too. Any tips on burning dirty 3rd world kerosene? Any tips on filtering? Fuel/water separator filter funnel? How much less heat should I expect compared to white gas? Any idea on fuel consumption compared to white gas?
If you can use the XGK, it is better suited for burning kerosene. The pre-hearing cup is on top to warm the fuel heating tube using pre-heating paste which is cleaner. Another tip is to blow out the flame before it goes yellow when turning off the stove.
FWIW kerosene has greater heat content than gasoline on a volume-to-volume basis. I don't know if that translates to faster water boiling on your stove though, but it's a step in the right direction.
What model of the Whisperlite do you have? It's agreed upon by many backpackers that the XGK and the Universal burn kerosene better than the International. That isn't to say that the International doesn't burn kersosene well at all, it just takes a little bit more work. If you're using the international, I would double prime the cup with kerosene to make sure the element is nice and hot. Then you should be good to go.