Big thanks for those recipes. Initial expenses are a little bit higher than single Valejo thinner, because smallest amount of Butyl Glycol that I found was 1 liter, but as it does not seem to spoil, it will be almost endless supply for me.
@Baran İşmen just to be clear: you are talking about volumetric percents here (e.g. measured by syringe or by laboratory-level graded pipette), not about mass percents (measured by weightening), is that right?