leaking proportioning valve body leaks, common?

[chowdaa]

this is the second eg civic i have got with a leaking brake proportioning valve body, dribble when i first got the car, leaking after a brake fluid bleed.

incorrect brakefluid??(using DOT4) or old seals/cups, where newer, less viscous fluid is able to pass through the worn seals/cups?

my theory is the little rubber eye brake fluid dribbles from is a weep hole, which allows users to know brake fluid is travelling past the internal cup/piston/seal and is faulty rather than leaking pressure to unwanted calipers/cylinders. correct me if i am wrong anyone and please advise.

has anyone else had this? how did you correct it? what are some theories for these leaks?

[90LAN]

it is just old age

just replace with correct one

[Matter]

common problem with the age of the car.
i just bought a new 4040 from honda, about $260.
second hand is alot cheaper, but brakes are important so i'd rather new parts.

[B18cEG]

Very normal, not sure if there available but try get new seal for the prop valve, should be just an o-ring and you could do it with everything connected