On Meguiars.com click on cusomer care top middle then bottom left click on (MDS) fata sheet give them an email address so you can log in see what is in thier products
When we went on vacation this summer I washed above the beltline with Z-7 wash below the beltline used Optimum wash. When got back rinsing off before wash where used Z-7 the dirt mostly came off below the beltline where use OPTI dirt pretty much stuck to it.
The one I do notice about usein Meg's 21 is when the car is in the carport and it rains moisture collects on the vehicle it gives an odd look.
Duragloss is but in certain lifght angles it looks bad like when pic is taken half the car is sun the other half is in shade the sun side looks glossy but the non sun part looks washed out no color kinda dead looking.
When we went on vacation this summer I washed above the beltline with Z-7 wash below the beltline used Optimum wash. When got back rinsing off before wash where used Z-7 the dirt mostly came off below the beltline where use OPTI dirt pretty much stuck to it.
The one I do notice about usein Meg's 21 is when the car is in the carport and it rains moisture collects on the vehicle it gives an odd look.
Duragloss is but in certain lifght angles it looks bad like when pic is taken half the car is sun the other half is in shade the sun side looks glossy but the non sun part looks washed out no color kinda dead looking.