I change my oil at 6,000 with synthetic vs 3,000 for non. I drive about 20k miles/year, cutting my oil changes from roughly 6/ year to 3. That has to be greener!
Len, I have been using synthetic for 15 years and drive all of my vehicles to at least 300,000 miles.
My understanding is that one reason the synthetics are called that is because they are not made from dinosaur or minerals, but from replaceable plant material, so that's really green right there.
I also use much longer change intervals with the synthetics. Time to recognize that some of the old ways were needed with the old stuf, but new stuf makes for new ways. Is anyone still changing out their sparkplugs every couple of thousand miles? Even tires are lasting a lot longer!
Time to give Synthetic Oil a second look! I didn't realize it was veggie! I don't change plugs nearly that often.
My original thread is really getting pretty wide ranging... I'd like to collect some opinion on cutting weight on the camper... I wonder what the tenting fabric used weighs... I'm guessing there must be 35 ft or more of it on a small camper. I do a bit of back packing and there are a lot of very strong, very lightweight fabric materials around. Anyone played with that idea?? Also the finished wood surfaces on the shell models, is there potential to use alternative materials there?? Perhaps using thin plywood glued to a framework? (Cabinet walls and fronts). I wonder if you started from the ground up exchanging lighter for heavier materials (WHERE THEY AREN'T NECESSARY), just how much could be shaved from the total wieght, making a unit a 4 cylinder truck could handle with ease.