After it was profesionally detailed, I just have maintained the shine with Zaino Clear Seal, Chemical Guys V7, Zaino Z8, and I use Diamond Blue Mist after every wash, as it is inexpensive and you can just spray it over each section of the car, before drying it with a microfiber towel after each wash. It works great in the summer as well, because it disolves hard water, and eliminates water spots. PM or e-mail if you have any questions. I really miss that car. Every time that I see the empty spot in the garage, I get emotional, LOL
I will hopefully have something again soon