Couple of comments...
A lot of people don't understand what the product is and this can lead to disappointments.
A lot of people don't understand how to apply it and then remove it and this too can lead to a lot of disappointments.
I've been told by the head chemist at Meguiar's that #7 is a product he's never modified and to his knowledge is unchanged since Frank Meguiar created the formula back in the early 1900's.
The color can change because the color of the raw materials can change due to climate. It has no affect on the performance of the product.
This is a non-abrasive, pure polish. Most people think a polish must have abrasives and be able to abrade the paint and remove defects but that's not true according to grandfathered terminology, that is the way that terms are being used today starting from how they were first used since the Model T was introduced.
This product is primarily beneficial to single stage paints because it will penetrate into the paint where the unique polishing oils will do their magic. Clear coats are so tight in their physical make-up that no chemicals readily penetrated into them unless they are etching or eating into them.
The oils bring out the full richness of color of a pigmented paint, it's the beauty factor that you either get you you don't get.
It's not a wax so not only does it not need to dry, it shouldn't be allowed to dry, you simply apply, work in and then remove. A thin coat removes easiest as it is quite oily so you really only need to apply enough to work a section so as to make removal easier.
I show how to use it in my first DVD,
How-To Use the PC for Show Car Results on a single stage lacquer 1960 Corvette, including how to apply and how to remove it.
The Corvette had a swirl-free finish as we had just finished removing all the swirls so it was a finish in "Excellent Condition", which is the right condition for one aspect of how the #7 is supposed to be used.
It's actually a very unique product.
