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      01-11-2013, 04:35 PM   #15
nicknaz
Brigadier General
United_States
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Drives: 2012 Z4 35i
Join Date: May 2008
Location: San Diego CA

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I hear you guys on hand washing. I try to hand wash whenever possible so I am 100% sure the cleaning is done how I prefer. As I'm sure you all know sometimes other stuff has to get prioritized over cleaning the car by hand.

Interesting speculation on the soap corroding seals. My personal speculation is that is a little bit of marketing hype from soap companies combining with typical OCD enthusiast paranoia. I would love to see tech on how the soap compares with the everyday smog / pollutants our cars are subjected to regularly anyway.

Now that I know the car's roof seals are tight enough for this particular car wash I'm going to stretch out my hand washes by maintaining the car at this touchless place.