DH was a fan of fleece, I am not, but I always washed his fleece jackets at 40 degrees centigrade with anything else to be washed at that temperature and on the short cycle to make up a load, as I never wash only one thing at a time - too expensive.
Everything came out looking perfect, or as perfect as when it went in, but clean as apposed to dirty.
I used to hang fleece clothes out on the line with everything else, and in the winter just hang then up in the wash-kitchen to dry. Never put any fleece in the tumble dryer.