Forum member 'rzatch' shared this before and after photo from a customers car.
He used Mothers Professional All-Purpose Cleaner.
Mothers All-Purpose Cleaner is a highly-concentrated, biodegradable multi-purpose cleaning solution for a wide variety of surfaces. Mothers All-Purpose Cleaner combines highly-effective cleaners with a combination of water miscible solvents and surfactants making this formula safe and effective.
Mothers All-Purpose Cleaner breaks down dirt and grease with ease. It is perfect for cleaning carpets, fabrics, vinyl upholstery, engine compartments, fender wells, door jambs and more. At higher concentrations, Mothers All-Purpose Cleaner excels at cleaning wheels, tires, whitewalls and pre-spotting carpets before shampooing.
Recommended dilution ratios:
General purpose – 1:15
Carpet, vinyl & upholstery – 1:10
Spot & heavy cleaning – 1:5
Engines, tires & grease – 1:3
128 oz. Concentrate