Another consideration when using chemicals should always be the flashpoint, or the minimum temperature they will burn. Directly related to flashpoint is vaporization; IOW the lower the flashpoint the more vapors your going to get at ambient temperatures. Paint thinner generally has a flashpoint of 32 deg F. The flash point of mineral spirits is about 120 deg (similar to Kerosene). As an example the flash point of gasoline is -50 deg F. So go for the mineral spirits and stay alive..