Just wondering what commercial and/or homemade cleaners anybody has found that is mellow on vinyl interiors and roof to bring back the brightness (mine are white)and to make them look "fresh" again.

 

On the white interior of my 71 Cutlass (original but filthy), I used Orange Clean and a large soft plastic brush with a toothbrush in the seams. I followed it up with another wipedown with the same product and a clean rag.

Worked good for me.