I use 1qt transmission fluid, 1/2qt motor oil, and hoppes9 to thin it. I vary the amount of Hoppes9 to get the consistency that I want for the weather conditions- more if it's colder, less if it's warmer.
'The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.' Thomas Jefferson
National Rifle Association Life Member