the quick detailer for the interior does work on the steering wheel and it does provide the uv protection for everything. however since the wheel is handled everyday and it is pulled so tight i would get a good quality leather care product such as meguiars leather cleaner/conditioner (meguaiars should freaking sponsor me, i buy so much stuff from them and tell people all about their products, lol)
Might also want to pick up meguiars exterior quick detailer (comes in aerosol can or spray bottle) i use this everyweekend if i cant wash the car that week. IMPORTANT do not rely on that only, it is ok to use every now and then if you cant wash or if it is raining but u must absolutely wash the car it can be done indoors. it is also great for getting bird s*** off your car. but like i said this cant replace washing the car it is still important to wash your car at least every three weeks if not more, i usually wash once a week and wax every other week.
I would also reccomend the clay cleaning bar, i did this right after getting my car and it made a huge difference. it takes all the contaminants off the paint and restores the shine like you would not believe. i thought the paint looked great but when i was done with the clay bar it looked ten times better. this does take some time (at least an hour) but it is good for the paint and provides a perfect base for you to apply nice clean wax to. this is something you can do every other month. once again meguiars has a kit that includes two clay bars, a small bottle of the quick detailer (it is used to lubricate the area where you are using the clay bar), a microfiber towel, and a small bottle of meguiars cleaner wax. you wash car, and dry. knead clay bar until soft, hold in your palm and spray small area with quick detailer, rub clay bar in side to side motion or circular motion in this area only, knead the bar anytime it gets dirty (and it will) do this for the whole car, use microfiber towel to wipe off each area to remove any residue. when done apply an even coat of the cleaner wax and let dry to a dull haze, buff off. next apply at least one coat of meguiars nxt generation tech wax or meguiars gold class wax. allow to dry to a dull haze and buff off. ( i have an orbital buffer and find that the foam pads work best for application and a microfiber towel works best for buffing/polishing) step back and admire your now beautiful finish.
Edit:use microfiber towel to wipe off each area to remove any residue from the clay bar and/or the quick detailer (when doing clay bar cleaning)