I've done 3 t-birds in a row no problem. Mine were in the 10 lb. range, so 3 min. a lb I was done in 1 1/2 hours!! I have kept my oil (peanut) for four years no problem. Let it cool put back in container and freeze, worked for me. I would say in the four years I cooked maybe 12 or so birds. My family just likes them plain so I never had to strain, after cooling any crud was on the bottom and I poured off the good stuff.
That's just me, your results may vary............