Use a good round as a spacer at the foot of the splitter to make up for the extra length that it's designed for....place a round you want to split against the "spacer" round and stop the wedge before it gets to the spacer....it should split the round you want split with much less travel.
I'm not familiar with the difference between regular and synthetic oil in regards to low temperatures, but remember that it isn't primarily the motor that you're concerned with in cold temps but rather the hydraulic pump and the temperature of the oil inside it...it's got to be fluid enough to do what it does.
As for pulling it, you might want to invest in a sheet of 1/2" plywood and split it length ways...you could lay this down to roll in on...switching positions between the two pieces as the splitter travels (leap-frogging style). Also, if you have something to anchor it to at the top of your hill where the rounds are then you might could pick up a cheap HF come-a-long or a boat winch to pull the splitter up the hill with.
Just some thoughts, best wishes,
Ed[/quote]
Thanks, Ed. The problem with using a spacer, as I discovered, is that the two-handed operation means you can't get much distance from it, and sometimes the chunk can buckle and flip up potentially into your head. A lot of the stuff I have to split wasn't cut evenly on one side or both, which makes the buckling problem worse.
The winch idea would be great, but I'm doubtful it would work with this piece of equipment and my hill since it has to be nearly straight upright and vertical just to go over level ground. It's really unfortunate that they didn't make this thing with retractable/extendable wheels or stand so you could get the stand out of the way when you need to move it or put it down for stability when you use it.
Also, I assume as an electric-power device it should not be left outside, even covered, so any method of hauling it up there would have to be quick and easy enough to do repeatedly.
I'm likely going to have to have my wood supply dumped near the house, split it down there and then truck it up to the stacks. Pain in the neck, but doable.