845 and spotting

G

GoCubsGo

New member
Quick question for the Pros and/or Chemists out there.



I conducted a full detail/winter prep on my daily drive in October (Carbon Black BMW) and everything turned out great. I layed down 3 coats of Collinite 845 for my winter protection (Chicago winter = lots of salt). Over the holiday I made a couple trips in the snow and my dd was exposed to some salt and I wasn't able to wash her for about 7 days. Finally I was able to wash with ONR (my usual wash method) and I noticed a ton of spotting all over the finish that didn't come off even after the wash. I tried a couple QD's and nothing. I then took the next step for water spotting and hit it with a 50/50 vinegar/distilled water solution. This did the trick, it was literally wipe on/wipe off and the water spotting was gone, but I had to basically apply the solution to every panel.



My question is: Have I jeopardized the Collinite 845 protection by applying the vinegar/distilled water solution to pretty much the entire car?



Any input would be appreciated :2thumbs:.
 
Yeah, I would put on another coat of 845 for sure. Even if the vinegar didn't compromise it (which it probably did), whatever else caused the spotting probably did.
 
Any time you put anything on a car, whether it is carwash, vinegar, or alcohol, you remove some of the LSP. Vinegar has the ability to remove more than plain water (there are vinegar-based glass cleaners that are decent at removing greasy fingerprints). You definitely reduced the amount of 845 left on the paint. I don't think anyone can tell you exactly by how much. I'd apply another coat if at all possible.
 
vinegar is acid = remove protection. how long did you wait between coats? i have been using 845 for 36 years and have never applied more than two coats at least 12 hours apart with no spotting, ever. FWIW.
 
In my using 845 I've noticed that salt does a number on it-the beading falls off and the salt tends to adhere to the wax.
 
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