Ok, I've washed my car few weeks ago and apply Z5 and Z6. got about 300+ miles on it and still relative clean (but dusty and light coat of dirt) It still looks like it just got wash, but when I run my hand over the door, etc. My hands gets dirty, like if you run your hand over a note written in pencil.
Now, do I need to rewash the car before I reapply Z5 or can I spray it with Z6 and wipe the dirt off? Its like 70 degrees and under so don't really feel like waiting till sunset to wash the car cause its about 60 deg by then.

 

just wash it with Z7.

 

Ok, several things here:

You will scratch the finish if you run your hand over the paint while the paint is dirty or dusty, that is just how soft these clear coats are now days. I have driven 250 miles to a car show, got to the show (with my black car) and used a California Car Duster and then Z-6ed the car, won best of show, and drove home so it can be done with out washing the entire car, but you have to realize I did not drive thru any rain, no puddles, etc.

If you dont have a California Car duster to remove the standing dust I might not just shoot Z-6 onto all that dirt.

 

DITTO: make sure you use a 100% cotton towel made in the USA with that Z-6.
If you don't have a California duster, GO GET ONE. Be sure you wrap it in newspaper overnight to get some of the wax off.

GL.

 

Yes the Cali Duster is a must to remove that fine layer of dust and then just hit it with Z6. This is a great method for keeping a car looking great. Just remember there is point when a car is too dirty and must be washed. Later.