How dirty is too dirty when using a rinseless wash? Please share before pictures of how dirty you'll go and offer any rinseless wash advice you think is beneficial. Thanks!
Unless the car is caked with dried and visible mud or dirt I have no problem doing a rinseless. I did so on my Audi all winter and have yet to hit it with a traditional bucket/hose wash. I have and will take it to a DIY pressure wash place to blast off the yucky stuff if needed. Overall though, it's really not that big of a deal so long as you use good solution, towels and proper technique.
Here's an example of our van that I have washed even this dirty with the below technique. In this case I used my power sprayer for the solution to help drive off some of the caked on dirt.
My Technique:
I use about 2-3 gals of solution in total. I use The key thing about a no-rinse is the solution is extra slick and really does encapsulate the dirt. You can really feel the lubricity when washing or if you were to dry an clean portion of the car with a microfiber towel. I also use a de-ionized / distilled water which really helps reduce any streaks and/spots and insures the solution encapsulates dirt and isn't having to deal with the natural hardness found in tap water. Solution wise, I’ve fallen in love with
Wolfgang Uber Rinseless. It’s far better than ONR in my opinion and is well worth trying if you’ve not done so. ONR is still very good mind you but I've moved away from it since I can see and feel a difference.
1. Fill a garden or powered Sprayer of your choice with No Rinse Solution
2. Fill a 3 gal bucket with about 1 gal. of No Rinse Solution
3. Insure I have a stack of 16" x 16" Eagle Edgeless Professional Super Plush 480gsm Microfiber Detailing Towels.
On my 4 door sedan the large plush towels go quite far. I use anywhere between 4-8 for the entire car depending on how dirty it is. Key is to fold them into four then make one more fold so that you can get a total of 16 completely clean/fresh passes out of a single towel. These hold lots of solution and are VERY Plush.
Both hose/buck and No-Rinse involve a pre-rinse and soak. In the case of a no-rinse system I use a garden sprayer to pre-soak the car with a fine to medium spray pattern being sure to cover every bit of dirt/panel. If you have the room in a garage and don’t mind a mist, you can even use a gravity fed system to feed an electric pressure sprayer and do the same thing. I pre-soak then wash in 5 stages; essentially the same as I do with a hose/bucket in the summer.
1. Wheels – Prevents splashing of nasty dirt up on a clean car
2. Front clip/nose and trunk/tail next as rinsing them tends to splash the hood/trunk
3. Hood-roof-trunk, windows. I do windows last in this case since they don’t scratch.
4. Side 1; one panel at a time top to bottom
5. Side 2; same
On the sides of the vehicle I tend to do all the top surfaces first then the bottoms being sure to put the lower portion dirty rags in the to-clean bucket quickly.
Steps.
1. Pre-soak, waiting a few minutes for the dirt to be encapsulated, oils and dirt to be broken up and solution to really work.
2. Quick spray down once more just prior to washing the panel to wash away as much as I can and to get the dirt to flow DOWN/OFF the car. Spray top to bottom
2. Wipe from top down using only a single pass per clean side or section of a towel. Each towel can be folded to a clean section allowing 16 passes per towel. More than enough for the entire panel or section. Keep the rage sopping wet and splash more solution on the rage if needed.
3. Last thing after each panel is washed is I give it another quick spray down top to bottom in order to push/wash away as much debris as I can. My
powered sprayer is awesome for this as when combined with a good fan style spray tip it really works well at rinsing off any remaining aftermath.
I personally do not dry the panels one at a time as I go. Many do, but I don’t. Since I use distilled water, the clean panels blot dry easily and don’t tend to leave any drips or spots but if they do, a final wipe off with a clean dry MF Towel is all that’s needed.
Drying is the key IMO to keeping a car scratch/swirl free. IMO it causes more damage than a poor wash technique as when washing at least there’s more lubricity involved. When I do use a towel, I use a waffle weave towel and I NEVER drag it across the paint. I lay it out and blot it with pressure from my arm, pick up and move it and repeat. ANY wiping is only done with a clean, damp mf and No-rinse treated towel.
Once done I am a huge believer in a high quality detail spray and sealant. Both not only give the car a final spotless and flawless look but help insure future dirt has a layer of something there to help when pre-soaking the next wash cycle.