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Old 13-11-2019, 04:18 PM
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Default Restoring washer bottle cap

The original E36/Z3 white washer bottle cap 61661379054 is NLA from BMW and most have yellowed over the years so question is has anyone found a way of restoring a yellow cap back to white?

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Last edited by Dave P; 13-11-2019 at 04:21 PM.
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Old 13-11-2019, 09:27 PM
cubz cubz is offline
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Have a google for retrobright Dave it works wonders on yellowed plastics!
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Old 13-11-2019, 10:08 PM
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Quote:
Originally Posted by cubz View Post
Have a google for retrobright Dave it works wonders on yellowed plastics!

Yes I got the same result from google search but cant see a UK seller so far.
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Old 14-11-2019, 12:41 AM
cubz cubz is offline
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https://www.chemistdirect.co.uk/bblo...id_36798309331

^ This is supposedly a good alternative if you don't fancy mixing up some retrobrite yourself
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Old 14-11-2019, 12:42 AM
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If you do use this method don't forget to wrap the cap in cling film once applied to stop the solution drying out
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Old 14-11-2019, 04:23 PM
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Quote:
Originally Posted by cubz View Post
https://www.chemistdirect.co.uk/bblo...id_36798309331

^ This is supposedly a good alternative if you don't fancy mixing up some retrobrite yourself
Quote:
Originally Posted by cubz View Post
If you do use this method don't forget to wrap the cap in cling film once applied to stop the solution drying out

Yes saw that method also and ordered some of the hair product off ebay, will update with results.
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Old 14-11-2019, 05:02 PM
cubz cubz is offline
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I used a similar solution to get rid of yellowing on a washer fluid bottle and it came up great!
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Old 16-11-2019, 04:16 PM
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First attempt, cap on right put in diluted household bleach for 3 days - whiter but still yellow


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Old 16-11-2019, 04:17 PM
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2nd attempt with hair products normally found on the z3 roadster forums will post up results

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Old 18-11-2019, 04:36 PM
Fat Tony Fat Tony is offline
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Hell, it'll be perm solution next mate ;)
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