How to wash in winter.

I never did like the idea of blasting salt off with a pressure washer. You make the call though. I think you'd end up with a whole lot of water all over the place too.



MorBid - doesn't the touchless wash spray the underbody and wells too? Or just not very well?
 
White95Max said:
I never did like the idea of blasting salt off with a pressure washer. You make the call though. I think you'd end up with a whole lot of water all over the place too.



MorBid - doesn't the touchless wash spray the underbody and wells too? Or just not very well?
Click to expand...



The touchless car washes don't do a good job of getting it out of the wells. The underbody is okay.



I don't think I'll use my power washer int he garage since I don't have a drain----too much water. I will; however, hit it with the regular hose with hot water (hot & cold are both in my garage).



I'll be heading out in 30min. to take it all on.



Pics to come as long as I don't forget to take them ;)
 
Even if it is to cold to wash, there is no reason why the interior cannot be cleaned :)



If washing outside use cold water, it takes longer to freeze and then drive the car to get rid of all the excess water. QEW might be easier however.....
 
Lowejackson said:
If washing outside use cold water, it takes longer to freeze
Click to expand...





I remember hearing that last winter, and it still doesn't make sense to me.

My experience on Friday was that it was easy to wash the car with the warm/hot water right when I started, but once that water began to cool off, I got ice on the car pretty frequently.
 
Yeah that's the article I read last winter. That theory is competely contradictory to common sense. I need to perform some kind of experiment to prove this to myself. I think I'll take two buckets of the exact same size and material, fill one with colder water and one with warmer water, and place them both outside my window, and I'll check them every few minutes to see which one freezes quicker. :)
 
The experiment has begun... :D



2 small plastic cups (supplied from AutoGeek with my Pinnacle Micro-Rejuvenator bottles) have been filled with water exactly the "2" line on the sides. One with water that is warm/hot to the touch (about the temp I would use to wash the car), and the other with cool water. I've placed them both in the freezer, about 2" apart, and I'll check them every minute from now on.
 
White95Max said:
The experiment has begun... :D



2 small plastic cups (supplied from AutoGeek with my Pinnacle Micro-Rejuvenator bottles) have been filled with water exactly the "2" line on the sides. One with water that is warm/hot to the touch (about the temp I would use to wash the car), and the other with cool water. I've placed them both in the freezer, about 2" apart, and I'll check them every minute from now on.
Click to expand...





Let us know how it works out. this should be interesting.
 
The cold one froze first? :confused:



I'm running the experiment again. I'll take some pics this time too and maybe someone can find something wrong with my methods here.
 
OK after the first trial, I dumped the water out and rinsed both cups twice with warm water. Then I allowed both of them to sit out at room temperature for several minutes to make sure each cup was at the same temp.



Mpemba_Effect_Test2.jpg




And BTW, the cell phone received CG's Pro Detailer + Carnauba QD yesterday. :)



I then refilled the two labeled cups, one with warm-hot water, and one with cool water, to the exact same volume (according to the measurements on the cups).



Mpemba_Effect_Test1.jpg




I will update again when one freezes.



My neighbor knocked on my door while I was taking the cups out of the freezer, and I told him what I was testing. He said there's no way hot water would freeze faster than cold water. He invited me over to have salmon while the Packer game is on "whenever you're done freezing water". :)
 
Mpemba_Effect_Test3.jpg




You can see the dime sitting at the bottom of the "W" cup, and resting on the ice of the "C" cup.



Mpemba_Effect_Test5.jpg






I'm convinced by my results. I encourage others to try this experiment as well. I'd be curious to see if anyone did actually get the warm water to freeze faster. I do agree that the warm water will cool faster, due to the huge difference in temperature (water temp compared to air in freezer) but I stand by my results that cold water will in fact freeze sooner than warm water.
 
Lowejackson said:
Have a look at http://math.ucr.edu/home/baez/physics/General/hot_water.html



New Scientist used to have a great article on this subject but you know need to subscribe to read it :(
Click to expand...

I suppose it's possible that warm water could freeze faster than cold water. The factors that could cause this described in the article make complete sense. However, this article describes what seems to be a really specific set of circumstances necessary for this to happen. I would say if you're talking about average conditions cold water would freeze first 99% of the time as evidenced by White95Max's experiment.
 
Astral said:
what are the best MFs for QEW work? any particular brands/products? any general guidelines?



(Also how many should I get?)
Click to expand...

I just QEW'ed for the first time today, but I have been doing a lot of reading up on it on this website and others. It seems most people prefer a genuine sheep skin mit to wash and a WW MF to dry. How many WW MFs you'll need depends on the size of your car, but you'll probably need 1 or 2 sheep skin mitts.
 
It makes some sence on a big flat surface like the windshield, but not in a cup. I must try it on the windshield when we get cooler weather here, now the sun is shining and it's about +3 C (35+ F I guess).
 
If need be, I will test the same experiment on my windshield this week. I will pour equal amounts of warm/cold water on my windshield and let it run down, and monitoring it to see when they freeze.



But that 2nd site claims that the Mpemba Effect was first noticed when the kid put his hot water in the freezer and it froze first. :confused: That seems awfully similar to my experiment.
 
You must log in or register to reply here.
Back
Top