Quote:

Several "rollerheads" have reported far greater self-leveling properties using a dash of penetrol.



I agree, when I started using Penetrol the self-leveling was far better.

In fact here is the paint mixture receipe that worked for me, I was using Brightside Black:
375-400ml paint
100ml penetrol
75ml mineral spirits (mineral turps)

This mixture worked perfect as I had a 575ml glass jar that I used for the paint. When the jar was about 33% full (66% used) I added a probably 25ml mineral spirits to overcome any evaporation that had occurred.

Hope this help anyone out there that's painting with the Brightside, but once again you'll have to find the ratio's that work best for you.