I almost burn year around with a Pacific Western. A couple of times a year I let it cool down a bit, shovel most of the ashes out then hit it with my backpack blower to get the fine dust off the heat tubes up top. Last year I shut it down for a day while I fixed the smoke bypass.
I did screw up on the weekend though. I use wood crates to stack my wood in and in the summer I usually burn poplar but I had a part skid of 32" long ash so I threw it all in the owb so I could take the crate away and replace it with poplar. Too many coals in the stove and the ash caught fire, sucked enough air through the damper flap that the water got up to 205. Reminds me that I need to replace the high temp sensor that has been broke for 2 years.
If I were you I would clean it out as clean as I could possibly get it, wash it out with water, suck up the water with a shop vac, then throw an electric heater in it for a day to evaporate the rest of the water. Then spray the whole inside with an oil undercoating gun.