Brake and clutch yellowed plastic reservoirs

E-Type
1

Does anyone have a method to restore the original reservoirs to white, I-have tried the hydrogen peroxide (12%) and UV light process with very limited success,
I’m trying to maintain as much originality as possible.
Thanks for any ideas.

2

We just had that. Here you go:

https://forums.jag-lovers.com/t/how-to-clean-plastic/386607

3

Hi Roger, they may be yellowed, BUT they don`t leak like the new repros do. The new ones are made with much thinner plastic and I have had them leak at the bottom and also crack at the top. Solution is to find old ones the hold fluid.
Regards,
Allen
ps: so glad I kept the old ones!

4

Try CLR (find it at HD). It works well on some types of stains, you may get lucky.

5

Brilliant, gives me faith

6

I will persevere with the hyd peroxide, Tedious and slow.

7

I tried soaking the plastic windscreen washer bottle in it. No joy.

I have a couple of bottles of this stuff.

I might try soaking the bottle in a solution made with it and see how it does.

8

Any idea what sort of plastic these bottles are? To my mind, if a chemical has an effect on something you would want to know it wasn’t degrading it e.g this list shows some plastics would be adversely affected by H2O2
http://www.ozoneservices.com/articles/004.htm
Think I’d just stick to my yellowed originals…

9

I used 35% H2O2 and UV light to remove the vast majority of discoloration from my windshield washer bottle. Since it is a non-critical (and likely never to be used) system, I didn’t worry about potential failure. Obviously brake system components are on the VERY critical list. If the old bottles are badly discolored I would suspect that the plastic in them is also degraded and brittle. There are new reproduction reservoirs with the internal metal nipple like the originals that shouldn’t break like the earlier repros.

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