I just finished power washing my driveway after scrubbing it with Krud Kutter oil remover solvent. The stains are better, but they aren't all the way gone.
Will the presence of these stains prevent the driveway sealer from adhering? I've given a good 5-10 min scrub to each bad spot with a deck brush and Krud Kutter concentrate. Should I go until it's spotless? I just want the sealant to stick!