90 wt gear oil I took out of a truck rear end. Let it set for a few months to let the heavy stuff drop out and it's good to go. It does have an odor if that bothers you. The guns never complain. In the winter I mix it with RemOil to lighten it up.
kwg
For liberals and anarchists, power and control is opium, selling envy is the fastest and easiest way to get it. TRR. American conservative. Never trust a white liberal. Malcom X Current NRA member.