KEROSENE

Every time I go to Africa, my rifles are oil free.
I remove any oil in litteraly pouring kerosene in the action and the trigger mecanism. I even fill the barrel with kerosene, shake it and empty it. Any metallic part is rubbed with a rag soaked with kerosene.
For the Sauer 202, I removed the stock and dip it in the kerosene.
The kerosene removes any oil and let the surfaces slightly greasy.
The drawbacks are 3. Kero is bad for the wooden stock and in wet conditions the rifle will rust.
The odor : kero stinks, one have to do that long before the safari begins.