how good can optimum power clean works?

these are some of the result i tried using this product, Optimum Power Clean
paint surface safe as well

1 day after 50/50 for a ONR cleaned combine with OPC, the right side is untouched, raining, to b clear the water start to hav some beading while the dity part stick the water together collecting dust
how about car interior? leather seats? no problem

2 engine bay i tried b4

after

another engine, b4
and there after
hope u guys can see the differences from b4 and after
and hope u enjoy reading~~!!