D & M wrote:
Any automotive wash and shine works. For black streaks, I found that Totally Awesome All Purpose Cleaner, that I get the Dollar Store, is...well...awesome.
X2 This stuff really is awesome. Works good on black streaks, but its use is almost limitless. I got to where I buy it by the gallon.
I find that the best thing to use to wash the TT with is frequency. I usually wash mine every third or fourth outing, wash the roof twice a year and wax once a year. The front gets washed every couple of trips, depending on how many bugs I bag, and gets wax every couple of months. My 2011 shines like the day I brought it home.