Accumulator said:
If you get the chance, let us know what you find out.
And remember to retest your wash/dry media from time to time. I failed to do that and my seemingly-fine (actually, I thought it was my *safest*!) BHB marred up the S8 before I figured out that it was past its prime.
Hi Accumulator:
I posted this with regard to a Grecian sponge on another forum thread:
"I'm debating moving over to a sponge from a mitt. I've tried the home depot grout sponge, it did not work well for me....maybe I got the wrong one! I have two of the sponges you mention and I washed my wife's forerunner with ONR. I live in the Midwest. It turned out very very nice.
If fact here's a little test I preformed to test the Grecian sponge, home depot sponge, and the wool mitt.
I poured a granular product on my counter and wetted each one of the items above and these were the results.
Mitt: nothing moved into the mitt. The wool laid flat and the particles dragged across the counter....if this was dirt I would assume this would cause swirls on my paint.
Home Depot Grout Sponge (I think I have the wrong one): Holes were way to small and particles stayed on top of the sponge. Only a very small amount moved into the sponge.
I used this sponge on my black car and I KNOW I created some swirls
Grecian Sponge: This made me a convert today. Those little particles got sucked up right into the sponge and that to me means no marring or swirls. This sponge also rinses very very clean. I'm picking up 5 more." Read down for the update here.
I did your CD test with the same granular product (Dirtex) with the same three items listed above...here's the update. The test I did above was just to see how the Dirtex moved into the media......the information above still stand as far as I can tell when doing the CD test with regard to moving the dirt into the media.
CD Test Findings
Mitt: Slight (very) slight hairline scratches but you can very easily modify the pressure to reduce them even more.
The key here I found was allowing the wool to sway across the cd. When the wool sways unlike I thought above it does not cause "swirls".
I don't know if you can truly eliminate all hairline scratches with any media.... to me it's finding out what does the least amount of damage while removing dirt from your paint
Grout Sponge: I tried this sponge on my black car with ONR. Ohhhh the swirls. Ohhh the swirls on the CD. Very hard to regulate pressure, holes are small and the dirt like you stated drags across the surface of the paint. Not for me but they seem to work for a lot of people. Makes Detaildoc's "before" pictures llok like new paint. Sponge was soapy.
Grecian Sponge: Huge holes a lot more gentle than the grout sponge. Seems the Dirtex gets way from the CD surface faster creates less hairline scratches. In a nutshell I would use these with lots of soapy suds (used this sponge with ONR my wifes 4Runner came out very nice but was not very dirty and I used the sponge like a duster...very,very little pressure).
Microfiber towels no scratching or marring on CD
In conclusion....I have to flip back to the Mitt because living the Midwest (and the CD test.) I can't always use a lot of soapy suds to wash the car and have to use ONR at times. The Mitt is more versatile with a variety of wash solutions and easier for a novice like me to move over the finish.
Like you at least I tried them. Just my thoughts and findings.
Regards,
Charlie