My Porsche 911 Forum
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Posted: Jul 12, 2010 9:09:20 pm

If your anything like me, and your water supplier supplies water harder than granite, then after you've finished wasing your beloved 911 it has water streaks and  water marks.  It's seems like it needs another wash and certainly needs a wax to hide the marks.

The amrks are casued by the minerals in domestic water supply being deposited on your car before youve had a chance to clear the water off.

Well, today I tried a little theory of adding dishwasher rinse aid.  My rationale being that rinse aid keeps water from forming droplets that can dry as spots or streaks. Rinse aid also improves drying by allowing water to drain off of the dishes after the final rinse. Rinse aid helps to reduce excess moisture on the dish racks and interior of your dishwasher.

So here's what I did:

- Added some rinse aid to a watering can of vintage Thames rock hard water;
- soaked the car with the water & rinse aid solution;
- added rinse aid again to a bucket of soapy water and washed the car as normal;
- Rinsed the car off with a rinse aid and water solution;
- dried the car with a microfiber towel.

The results were brilliant:

- The car shampoo frothed up better than usual;
- a bucket full of shampoo and water seemed to go further;
- when I rinsed the car off I noticed that the water didnt form any droplets;
- after dring there were no water marks at all.
- you dont necessarily need to wax the car after, but of course I did.

Posted: Jul 13, 2010 2:25:14 pm

Just got myself one of these;

All I had to do was go to Tescos?

Posted: Jul 13, 2010 5:12:40 pm

How much was it Matt?  Have you tested it yet.....would you recommend it?

Posted: Jul 14, 2010 8:39:37 am

Tried it yesterday, rained 5 minutes after so couldnt see the "dry" result, will keep you posted.........

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