ej8tunerman said:I tried the pro-line grout sponge on my fender of my civic today while doing an ONR wash. The car only had dust on it because it hadnt been driven since I last washed it a few days ago. I dipped the sponge in the ONR bucket and made sure it was completely full of ONR solution and lightly proceeded to wash the fender. I then blot dried the the fender and what do ya know? Straight line marring from grout sponge everywhere. Definately won't be using the pro-line GS for ONR washes.
Never had that problem and I have done around 20 ONR with the Lowes GS, including on a civic. Question - Did you wash the GS first before using it? All wash media need a good rinsing before use as they can contain some kind of residue from the factory/packaging that could swirl the paint. I also make sure that before every wash I rinse out my buckets to get rid of any dirt particles it may have gathered in storage.