I no longer buy gun oil (the kind in a plastic bottle) anymore. I still buy cans of RemOil as they do a nice job of coating parts.
I use Mobil 1 5W-30 in my Silverado (6 1 quart bottles). When I get done, I take the empty bottles and let them drain for a while into one of my older quart M1 bottles. Over the last two oil changes, I have gotten ~10 ounces of residual 5W-30 (there appears to be ~1oz in a drained oil bottle).
Even inexpensive gun oil is $2 for 1 oz. I figure I have enough gun oil for life.
I use Mobil 1 5W-30 in my Silverado (6 1 quart bottles). When I get done, I take the empty bottles and let them drain for a while into one of my older quart M1 bottles. Over the last two oil changes, I have gotten ~10 ounces of residual 5W-30 (there appears to be ~1oz in a drained oil bottle).
Even inexpensive gun oil is $2 for 1 oz. I figure I have enough gun oil for life.