Simple green is wonderful for cleaning pads, applicators, degreasing engines and wheel wells, i even spray it on rims to help break down bad dirt.
problem - you must use 30x more water to rinse it than you would with other cleaners. it is one of the reasons simple green is so potent.
i would never use that for paint, interior panals or uphlostry.
that said, take Danease's advice, check out his store, and dont worry about your panals returning to hazy land . . the
NXT protectant is a good product, and upon application it revived the plastic, and will keep it looking nice for a good ammount of time.
I have found that DP (detailers pride) interior cleaner works well, along with an OTC soloution - MG
quick interior detailer. Little protecting abilities, so always follow it up with a protectant, like your NXT
my 2 cents - good luck