I just started using No-Toil Oil on my filters recently from using Maxima in the past. I dirtied up two filters and went to wash them today with the No-Toil cleaner. This is the greatest stuff since sliced bread.....strike that this stuff beats the heck out of sliced bread. The filters came out cleaner than before I oiled them. Before I used the maxima cleaner and that stuff stunk up the whole garage and never got all the oil out. The No-Toil stuff was so easy and clean!! I mean those filters are so bright and squeaky clean I need sunglasses! They were never that clean with the maxima cleaner / oil. I washed them in the kitchen sink and it didn't leave an oily residue in the sink or anything!!!! :lol: And as far as filtering I checked close and after a lot of dusty riding I have no hesitations about using this stuff. No trace of any dust getting by at all.