If laundry is coming out with bluish colored stains, it suggest the detergent compartment or the fabric softener compartment is being overfilled. When these compartments are overfilled, the detergent or fabric softener will immediately dispense into the wash tub, resulting in stains on the fabric.
Warning: Do not overfill the bleach compartment, as it will dispense immediately.
To prevent this kind of staining, fill the detergent and fabric softener compartments only to the max level indicator.
A normal cycle will add water to the drum and cycle back and forth a few times to evenly wet the load before any detergent is introduced into the wash tub. Once this action is complete, the detergent will be diluted and dispensed into the wash tub.
If you are experiencing this condition, run a sanitize cycle with no clothes to clean the machine. Then use the recommended amount of detergent and fabric softener when you wash your clothes.
one of the things my mother always recommended was making sure the detergent/bleach/fabric softener/vinegar were fully dispersed in the water before putting any clothing into the machine. it's the opposite of what they suggest above, but worth trying.
I've noticed the difference when I haven't done laundry that way.
so ... if I combine the recommendation and real-life experience I'd suggest 1) running an empty machine with nothing, 2) running an empty machine with vinegar, 3) running an empty machine with nothing, 4) running a light load with not too much detergent