Turtle Wax Gold Series Car Wash
.. sucks.
This is the soap, detergent thing you buy in the one gallon container from Costco. It seems to be incapable of actually washing grime and dirt off. And it also seems be extremely difficult to wash off as well. Everytime I use it, I bitch about it. And since it came in a giant one gallon jug, I may be bitching for a long time. I should just toss it out and get over it.
The Zaino car wash soap (Z7?) was far better. Too bad I don’t recall them selling it in bulk.