My daily driver is a 2011 Kia Optima. I have owned this car since new. It runs great and has not experienced any of the engine issues most kias are known for.
At 60k miles I had the transmission fluid changed at the kia dealership. ( i am not sure if they did a flush or a drain and fill)...
I would recommend Motion Pro Cable Lube. I come from the powersport world and its always been a solid product for clutch cables, throttle cables and such. PB blaster also makes a good cable lube that may be easier to find for you.
I saw chain lube mentioned above, I would just make sure...
This is something I constantly worry about. I live by myself, have a detached garage and normally if I have to work on one of my vehicles its during the late evening hours because of my work schedule. I kind of keep to myself, so if something was to happen, it would be several days to a week...