What is the best thing to thin Model Master Acrylics with when airbrushing

I use their thinner product. Here is a link to it from a random website I just googled.

http://www.usartsupply.com/ACRYLIC-PAINT-AIRBRUSH-THINNER-TESTORS.html?gclid=Cj0KEQiArK6lBRC5-_jv48uxgrgBEiQAuxdZ9dFSquuJeoB9_2LE9-s-Ty9O6InJXj4m91Ug40bU7D4aArol8P8HAQ#.VKyu5HtG8QM

Hi, for years I use tap water.

Regards from the south
Alvaro

Generally a paint brand works best with their own thinners. For instance, I use Tamiya. Over the years I've used: tap water, distilled water, alcohol, and windshield washer fluid, and various combinations. They all worked to a certain degree, but the best results so far is with Tamiya's Lacquer thinner for their acrylics - perfect for airbrushing, but crappy for hand brushing.