GTcarz - Automotive forums for cars & trucks. - [tech] Proper Washing Techniques

Proper Vehicle Washing

Many of us enjoy the benefits of a freshly hand washed car. However, without proper knowledge you may be doing more harm than good. Washing a car improperly will induce micro-marring known as Swirls or Spider-Webbing.
The cause of this damage is due to foreign particles trapped in your washing materials. This can happen several ways such as,
A.Improper storage of materials when not in use.
B.Improper materials such as using Dishsoap* (See bottom note), old T-Shirts etc.
C.Improper washing techniques which lead to further damage in the drying stage.

Materials

The following materials are recommended for proper washing.
A.Two regular Wash bucket’s or a single grit trap bucket.
B.Either 100% Sheepskin Wash Mitt, Cotton Chenille Mitt, or a Microfiber Wash Mitt.
C.Sponge, or Terry Towel for wheels.
D.Quality Car Wash Soap such as P21S, or Wolfgang.

Procedure

1. When washing a car try to do it in an atmosphere where the paint surface is not hot to the touch. Shade or Garages are the best atmosphere. Overly high temperature cause’s the water and soaps to evaporate too quickly not giving them a chance to remove the necessary particles.
2. Start by thoroughly spraying the entire vehicle with a nozzled hose or Pressure washer. Pay particular attention to heavily soiled areas trying to remove as much dirt as possible in this stage. If possible work from top to bottom in a downward angle.
3. Use a Soap specifically designed for washing automotive paints. These soaps have special oils and lubricants in them specially designed to lift and remove foreign particles. These soaps are also very low on the PH scale and will not strip previous waxes.
4. Start by washing the Wheels, this will eliminate any brake dust, or harsh Wheel Cleaners from contacting a freshly washed panel.
5. By using two buckets you greatly reduce the possibility of tracking dirt into your wash mitt. Your Soapy water will also stay much cleaner. Simply fill one bucket with your Soap/Water mixture and the other bucket with just water. After every application of Soap/Water dip and shake the wash mitt in the water bucket. This will loosen and clean the wash mitt BEFORE applying more Soap/Water to the mitt. The Soap solution will stay much cleaner and the majority or dirt will stay in the water bucket. You can also use special Grit Trap buckets. These buckets have a screen or false floor in the bottom where loose particles fall beneath. This makes it impossible to come in contact with these particle when re-entering the wash bucket for more soap.
6. Scrub the vehicle from top to bottom, try to follow the contours of the vehicle or any distinct body lines. By doing this and mishaps are much less noticeable. By washing in a circular motion any mishaps will be at all angles and much more noticeable. Rinse often! After every application of soap rinse the vehicle before going back for more soap.
7. After you are finished washing ,do a final rinse on the entire vehicle. For the final rinse remove the hose nozzle. Start from top to bottom and with the flowing water inches away from the surface sheet off any remaining or misses debris/soap. This sheeting rinse will pull materials down and leave much less water on the surface. There will be little water beading with this technique making it much easier and quicker to dry.

*NOTE: Using dishsoap regularly to wash a vehicle will strip your protecting waxes. The high acidity will also dry out any plastic/rubber trim over time. However, there is a certain time you DO want to use a dishsoap! There are times you would like to strip off your current waxes and try a new product; dishsoap will remove these waxes and leave your paint surface bare, ready for another wax application or polish. Dishsoap will not remove synthetic waxes suck as Klasse.