The very best patch lube I found, was when I lived in Smithers and after the moose guiding season, I walked up to the peak of Hudson's Bay Mountain is Smithers
and shot some Hoary Marmots, then cleaned them, put the inner fat into zip-locks bags. I fried out the oil and it was absolutely amazing. The next year, I wanted some
more, but the gvt. declared them protected the next summer, so that was it. After I used up that marmot oil, there was no longer an opportunity to get some.
They also tasted very good, btw.