Does anyone know how to remove stains on matte white vinyl? What do I use to wash my car?

 

Any mild soap will be sufficient on getting the dirt off the film. As for getting stains off, I would use a mild polish or paint cleanser first. Dab a small amount of paint cleanser on microfiber towel and gently rub on the stain. The trick is not to rub hard and heat the vinyl as it may turn the vinyl shiny.

Here are some products I'd recommend:

http://www.glisteningperfectionstore...Shampoo/Detail

http://www.glisteningperfectionstore...-polish/Detail

 

Mineral spirit works, but I do have some darker areas that won't come out.

 

Matte (Mat) or Satin Finish Paint
Matte paints has a higher proportion of diffuse reflection and glossy paints have a greater proportion of specula reflection If polished with traditional polishes the finish will become less matte and glossier over time; do not wet-sand or use conventional wax or use an automatic car wash that uses hot wax in the final rinse, as the flattening agents that cause the matte appearance will become ‘levelled ‘The textured finish is accomplished by a diffused 30 degree reflection and are retained very close to the clear coat surface. By levelling the surface the light will be reflected evenly and result in a ‘shine’.
Use a machine polisher and an ultra soft, zero abrasive cut (Lake County CCS Concourse Gold (100 PPI) foam pad) with a mild chemical paint cleaner (Zaino Z-AIO - All in One) it will remove surface marring and leave it satin matte. Use a clear polymer (Zaino Z-CS - Clear Seal) the key is to add surface protection and depth without adding gloss.
Swisswax Opaque products for matte finish paint and vinyl wrapshave been specifically developed (oil free) to ensure that they don’t change the appearance in matt paint or vinyl wraps.
1. Wash surface with Swisswax (SV) Opaque Car Bath
2. Prior to wax application the wrap needs to be totally free from oils and dirt. Clean all wrapped surfaces with SV Opaque Pre-cleaner.
3. Spray a 100% cotton micro fibre towel and apply to one panel at a time.
4. Wipe off with a clean 100% cotton towel
5. Apply SV Opaque Wax to one panel at a time, this wax will provide depth without adding a shine
6. Allow to dry for 10 minutes before buffing off and moving to the next section.
7. After the wax has out gassed and set-up, allow 2-3 hours and then buff the surface with a soft 100% cotton micro fibre towel
8. Use Quick Finish Opaque as a quick detailer to remove finger marks and smudges