So lets study a little about this scartches we get during the car wash...
Scratches, swirl marks etc etc that u get during a car wash can be caused by the following,
Sand or dust particles, (the most common)
Rings
Watches
Dry cloths (hard to believe, ei?)
and sometimes even finger nails... (yeap...)
The best way to prevent (or minimze) swirl marks is ...
DONT WASH YOUR CAR
just kidding :p
Anyhow, first thing to do before u start washing ur car, is to inspect the whole car. By doing so, u can spot areas with mud stain or sand. Since they r the main reason to cause swirl marks, make sure you hose them off first from top to bottom. Always hose/rinse/spray you car from top to bottom!
The following step is to apply shampoo. Most ppl thought shampoo is just to clean off the dirt and white foam (weeEEeeee~), but what they dont know is it lubricates the surface. This helps alot to prevent more swirl marks during car wash. Again important note to all... Apply shampoo from
TOP of the car to the
BOTTOM. Bear in mind that you might not be able to hose off all the mud stain or sand. Having your sponge running from the bottom to the top, u might collect those along the way... imagine running them over your car to the top...
After you have fun with the foam...(weeeEeee~
) rinse it off completely and dry the car with a cloth. Now before u start running the cloth over the car, wet the cloth. I've seen swirl marks created by dry cloth, and yes even micro fiber cloth... but no worries, all u need to do is just damp the cloth. Soak the cloth in water, twist it till its a little damp, and wipe off the water on the car, GENTLY...
And there you have it...