Oh, and back to the original poster.....I would never dust off my car with a dry or damp mf. I swear by my California Duster for that And before anybody chimes in an says they will scratch your paint....remember its a light duster, not a replacement for a car wash if you car is super dusty or dirty [8D] Been using the Cali on my car for 3+ years (along with the method above) and she is swirl free.

 

What's wrong with washing them in the washer and then air drying on a line outside or hung up in the house somewhere?

 

Nothing, that's ideal actually. As hot water as possible (to open up the fibers), a detergent, and air drying is the recommended cleaning procedure. Not fabric softeners though.

 

I always read that hot water would shrink the fibers, i would just stick to using cold or warm wash.

 

It's counterintuitive, yes. With most fabrics, hot water does shrink the fibers, but microfibers are different, read up on washing them and you'll see nearly all sources say to use hot water as it causes the microfibers to swell, thus releasing the trapped dirt.

 

Cold = shrinkage.....think about it