First time I used the Grout Sponge on my car I took over an hour cleaning just half a trunk lid going back and forth with the sponge, drying and the Brinkman checking for issues. To this day as I start washing a car I have to tell myself that this techinque will not mar the finish...it's Magic. :wow:
This is the sponge I use to wash cars without marring the finish.
Purchase from Lowe’s, ProLine, Professional, Tile & Grout Sponge 7″ x 4.5″ x 2.25″, $1.98 each for ONR usage.
Sponge is too big for my hand to squeeze out all the water when rinsing out so I modified the sponge to fit my hand and the amount of ONR I use after pre-spraying the panel.
What I use is one 3 gallon pail [12 quart,] from Lowe’s $1.98, modified grit guard [cut to fit pail bottom] and 2 gallons of ONR mixture.
I do a one hand dip, release, smoosh the grit guard, suck up good water as we pull away, squeeze out excess [not too drippy] and off to the next area.
If you do not have a grit guard my process is, squish and release the sponge a couple of times in the mixture so the dirt can release and drop to the bottom of your pail.
I slice my sponge in half length wise to make two [2] 7″ x 4.5″ x 1.125″ thick sponges.
I cut 1″ off the length of the sponges leaving me with two hand fitting 6″ x 4.5″ x 1.125″ thick wash media.
The two cutoffs are just great for nooks, crannies, lugs, door jambs, emblems, blah, blah, blah....
Being safety aware when cutting the sponge I do use a leather glove on the hand holding the sponge because the sponge is flexible and I like having 5 fingers on each hand.
A bread knife with that serrated edge worked well for me. Take your time cutting and you will do fine.
al