1. Nothing else to do. I take note of the mileage when I first hookup, then a mile or two down the road when I check everthing else I check it again to make sure no miles have been clocked; meaning still in gear.
2. No lubrication but understand if you lose toad battery power, it goes into gear. Keep a good battery in it and refrain from having a big heavy bunch of keys to hang onto and wear out the switch. I have an extra key (happens to be without diode since they are $1) to keep the steering unlocked. Then I can lock the car with the romote when we travel.
3. There is no requirement to run the engine.
4. Consider a M&G brake and one of my alert lights.
Dave D.
http://MidwayRVSpecialties.com