The leak might not only get worse and start dripping, but brake fluid
might as well get into the vacuum brake booster. You definitely want to
avoid that.

Probably, a non-OEM cylinder won´t give you another 30 years. But if
it´s half that time, why bother?!
Bleeding manually with a second person (pumping, holding, bleeding...)
shouldn´t be too difficult. And the new cylinder usually won´t get damaged.

Bleeding old cylinders, where the rubber membran gets shoved further
than its 30 year old worn-out grooves, might be much more dangerous.

Raimund

Am 16.03.2022 um 20:19 schrieb Tom Hargrave:
> The lip seal at the rear of your master cylinder is failing and you need to replace your master cylinder now verses later.
>
> The risk is the leak will get worse, you will lose too much brake fluid and your brakes will fail. But it's a common service part.
>
> Thanks, Tom Hargrave
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>
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Tom C
> Sent: Wednesday, March 16, 2022 12:25 PM
> To:vanagon@GERRY.VANAGON.COM
> Subject: Brake master cylinder weep
>
> Hey Guys,
>
> I think my brake master cylinder has a slight weep. It’s not visibly leaking anywhere it just looks slightly wet we’re it bolts into the booster and it seems like it’s very slowly and gradually making its way down the booster onto the wires and then a little drip. What do you guys think?  Any advice would be greatly appreciated. Thanks tom
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