Review on Wash Liquid Conc Gallon Bottle by Fahmi Manna

I used the latest Turtle Wax car wash and replaced with this. When I bought this gunk flush, the shipping price was $8.99. Now $15+. The bottom line is I have to use about 3x more car wash than the old turtle and still don't get a good oil/dirt clean. This is probably because between 2006 and 2010 the formulation had to be changed (due to environmental concerns) but I could end up using a cheaper detergent.