If the stain is especially deep you can substitute the lemon juice for something stronger such as white vinegar.
Remove concrete car vinegar.
Shake the contents of the spray bottle for 5 minutes to mix the water and vinegar thoroughly.
You may have to go at the stain again with the same process.
The making of the vinegar cleaning solution.
Follow the same process with white vinegar if necessary.
If the baking soda doesn t work to remove the moss permanently remove moss from brick with vinegar.
When you see this happening lift up as much cement as possible by applying more vinegar.
Thanks for the interesting question.
Concrete is porous so there are a few things that can remove it safely without damaging the clear coat paint or primer on your vehicle.
Wet a scrub brush and scrub the cleansing solution into the oil stained cement.
This option is very strong and it may affect the strength of the concrete over time.
It only takes a few tips special products and tools to remove the unsightly material.
Due to the acidity of vinegar it reverses the hardening process of concrete and the cement will start to lift up.
Consumer reports details the things you should never clean with vinegar.
Use a stiff bristled broom to brush away all of the moss remnants.
Process of how to remove cement from car.
Rinse the cement with water then repeat the cleansing process to continue removing the oil.
There are 3 choices for cleaning stained concrete floors with vinegar.
Spray the stains with vinegar for a more affordable solution.
I ve done some searching for you and the best most consistent answers i have seen advocate using white household vinegar and or muriatic acid to remove dried concrete from painted car surfaces.
Spoon the vinegar solution onto the remaining oil stain on your cement.
Next rinse the spot and let it dry.
If concrete is left too long on the finish compounds in it can damage the paint and cause sun fade marks.
Gently peel and scrape the cement from underneath to remove any loose concrete from the car.
One of the ways to clean a concrete driveway that has accumulated some moss growth is to shake a decent layer of baking soda over the affected area on the concrete and allow it to sit for about 24 hours.
So this should be used sparingly and only for extremely dirty floors.
Repeat the process until the concrete goes off your car completely.
Remove duct tape residue from car with this vinegar and water solution too.
Fill a spray bottle with half pure white vinegar then top it off with lukewarm water.
Many people it seems spell muriatic as muratic so i searched under both variants.