Some people buy the black towels so they don't have to look at the stains that don't come out. All that really does is color mask the stains though.
I recently bought the Black Fire MF detergent to try it compared to the Costco HE detergent I had been using.
I don't find much of a difference if I just put the towels straight in the washer. However, I always pre-soak the really dirty towels in a 5 gallon bucket of fairly hot (about 130-140 degree) water and detergent, and usually leave them soaking for at least 4-6 hours, and hand-agitate them for a few minutes every couple hours. Then thoroughly rinse them and ring them out before putting in the washer.
On the more dirty towels, the pre-soak really improves the cleaning effectiveness compared to just throwing them in the washer. Hard to say for sure, but I think the BF cleaner may do a slightly better job for the presoak. Some still have stains, even after the presoak.
There's no dirt or grit in the stains though, so it's more like a dye.
One last point: To be on the safe side, always wash new towels before using them on your nice paint. You never know if they were dropped/set on the ground or other dirty surface at the factory. Or maybe there is airborne dust at the factory or the warehouse they are sold from.
I recently bought the Black Fire MF detergent to try it compared to the Costco HE detergent I had been using.
I don't find much of a difference if I just put the towels straight in the washer. However, I always pre-soak the really dirty towels in a 5 gallon bucket of fairly hot (about 130-140 degree) water and detergent, and usually leave them soaking for at least 4-6 hours, and hand-agitate them for a few minutes every couple hours. Then thoroughly rinse them and ring them out before putting in the washer.
On the more dirty towels, the pre-soak really improves the cleaning effectiveness compared to just throwing them in the washer. Hard to say for sure, but I think the BF cleaner may do a slightly better job for the presoak. Some still have stains, even after the presoak.
There's no dirt or grit in the stains though, so it's more like a dye.
One last point: To be on the safe side, always wash new towels before using them on your nice paint. You never know if they were dropped/set on the ground or other dirty surface at the factory. Or maybe there is airborne dust at the factory or the warehouse they are sold from.
