I had previously tried Testors Universal Thinner to mix a burnt umber wash,it was very hot and began to affect a well cured Tamiya basecoat protected by Alclad clears,one was Aqua Gloss and the flat was their Lacquer stuff.
I tried this stuff,I think someone said this was good to use
However it would not mix with the Modelmaster burnt umber,it just remained separate particles suspended in the thinner.
Odorless mineral spirits cuts enamel paints well. But I can’t say if it will hurt your previous coats or not so test first. I have wiped down Tamiya colors with it but not Alclad fwiw. I generally don’t use enamel for washes, we have so much craft paints and artist acrylics around here I just use those. Oh and oil stains that clean up with water too ( Duncan), makes a great grime or rusty water stains for older engines and stuff…
You can get started cheap with Artist’s Loft sets from Micheals. Small tubes in the sets but you only use a spec at a time. Sets give you colors for tinting options.
Exactly… Somewhere I saw a Windsor Newton set of 10 colors for about that, maybe on sale. But too with Micheals you can get coupons for 20-40% off. They send them to me all the time via email.