Kerosene is used in dachas and sold in the suburbs. Try the Russian version of a hardware-paint-dry goods store (Khozyaystvennye Tovary) in the country (Podmoskove), in villages and dacha areas where people still use it. For example, in Ilinskoe village try the "Khozyaystvennye Tovary" on Moskovskaya ul., 21, or the Fuel Complexes in PROPANE AND BOTTLED GASES.