This is a very rough mod, i use this similar to washing your car at a car wash, This is basically a one time use washer, You have to purchase this every time you load into the game to wash your vehicles.
I have added in a SUPER fast wash meaning it takes about 1 – 2 seconds to wash a vehicle from 100% dirty
To use this simply purchase the hoseless washer in the misc section in the store, the wand appears in your same place as your hand tools are. Just like a chainsaw. Then point and wash!
costs 1 dollar/euro per purchase lasts as long as you are playing then disappears and you can wash anywhere any vehicle not range restrictions

Credits:
Maggz