Widetrack, I run 0w30 full synthetic and a quart of Lucas 'syrup' in the winter, and 15w40 with a quart of Lucas in the summer. STD oil pump, but I cleaned up the drains and smoothed out the inlet where the oil pump bolts on. 20#'s at idle, 65#'s max. I'm a born and raised Alaskan, and I've had plenty of experience with thick oil. I won't start an engine if the oil won't drip off the dip stick.
Not to mention I have two block heaters, a circulating heater, a pan heater and a trickle charger to make sure everything is up to the task in case I ever do have to leave it outside for an extended period of time.