Guar juice made with Walmart Great Value Dishwashing liquid at 20:1
by Edward Spiegel
I have only done one session with this detergent (Oct. 2015 with detergent purchased in 2014). It performed quite well in that session, but it was only one session. So, I don't feel that I can judge how comparable it is to Dawn Pro. The pictures in that session seemed to indicate that it might be slightly stronger than Dawn Pro and so resulted in a slightly thinner film. More exploration is warranted.
Certainly, this is a detergent worth trying out.