Thank-you, DDawson, for your continued interest in me house sitting for you.
I just got my van back on the road yesterday, but it is still quite sick with one or more lazy hydraulic lifters. The plan is with frequent oil changes and engine flushes that the crud that is causing the lifters to malfunction will be flushed out, so they will start working again. However, for now the engine is gutless, and can only be used to drive a few miles around this small town. It also still leaks oil badly, so taking it on a long trip is not likely a wise choice.
So, it does seem time to replace the old van. A tow truck driver who towed my van about 2 months ago told me about a mechanic in the area who has been rehabing Jeep Cherokees with Mercedes diesel engines from the 80s. While that all sounds ancient history it could be the ideal vehicle to negotiate the high mountains of the inter-mountain Southwestern USA, such as Ochoco pass in the winter. And, it will get 45 mpg, so it could make driving long distances affordable; and being diesel means I can make my own fuel for it.