I'm not very conscientious about cleaning my brushes — I need to develop better habits, as brushes are expensive and they don't last long if you abuse them.
Submerged inside the can, I've got the screen from an inexpensive brush washer. It fits perfectly! I used to scrub my brush along that mesh to help clean it, but quickly discovered that's a great way to break the bristles. Now I just slide the brush along the handle part to offload a good deal of the paint.
I also dip my brushes in the oil if I'm going to leave the studio for a short time — maybe an hour or less. It keeps them viable until I get back.
At the end of the day, I clean the brushes with The Masters Brush Cleaner. This stuff is the bomb. Inside it looks like... like lard, maybe? No, no, it looks like soap. It's a solid block, somewhat softer than a bar of hand soap. You wet your brush with really hot water and brush it back and forth until a lather works up. Rinse with hot water. It works the same as any other type of oil: water doesn't solvate it, but hot water and soap does.
I'm experimenting with a pretty beat-up brush; we'll see if it restores the bristles at all. I'm using that aluminum brush washer because the brush can be suspended and soak without the bristles mashed against the bottom. The little plastic cup is because I'm only cleaning one brush and don't want to fill up the entire basin.
Does anyone have any good brush cleaning tips?
[Update: the Murphy's was helpful, but no miracle. If I was out of Masters brush cleaner, I would use it in a pinch.]