That's exactly what I proposed. Recycling.No, that's wrong. Used oil should be recycled, period.
5000 mile used oil from a regularly driven car. A little dirty but little fuel dilution and water content. I mean, it was good enough to be in that car up to mile 5000. It's not like it's all the sudden insufficient for lube duty. Why not send it another 200 miles in the jeep?
Put the oil into the jeep. Let it work and play there for 6 months, 200 miles. Lots of fuel dilution and water content per mile. After six months, dump and refill with more used oil from the fleet.
The crux is that frequency of changing (six month or one year intervals) is more important for contamination removal in this application...wherein the oil is never going to be "sheared down" or otherwise "used up." OP said he was being cheap. I just gave him a cheap path that is far better for the Jeep than mileage based intervals.
I don't get when folks act like used oil has cooties. If it didn't have serviceable life when you changed it, you should've changed it sooner.
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