Another dedicated pre-washer (abuser) here - hot water, hot dryer.
If I am washing yardage (at least 2 yard pieces) I wash on delicate cycle. If I am washing smaller cuts I wash on delicate cycle but I leave the lid open so it doesn't agitate at all (I control the rinse cycle as well - but let it spin normally). I can avoid a lot of fraying and tangling this way.
Something like a red and white I wash in very hot water with a small amount of detergent and synthropol and a color catcher. After the wash cycle is complete I remove the color catcher, and wash it again in hot water with a fresh color catcher. If the second color catcher comes out clean, I toss it in the dryer. If the second one comes out with color, I'll repeat the hot washes until the color catcher is clean.
As QuiltE mentioned ... some reds can surprise me and not bleed at all, others that I wouldn't think would bleed ... bleed like a stuck pig. I washed a Northcott black print 4 times once. Ugh! There really is no rhyme or reason to what will and what won't bleed ... although batiks are usually suspect.