Frequency of fluid changes other than engine oil?

[Caveat]

Hi

Was wondering about things like:

Brake fluid? (expensive compared to other changes?)
coolant?
gearbox oil?

...anything else?

In general is there a mileage based interval for these things?

 

[RS2K]

It varies car to car. I have a classic car, and I drain & replace brake fluid every 3 years (as it absorbs water). I drain and repalce coolant every 2 years and also remove and reverse flush rad. Gearbox oil never needs changing acording to specs.

 

[Caveat]

Thanks RS2K

Gearbox oil never needs changing acording to specs.

Do you mean according the specs of your classic car, or generally?

The others were sort of along the lines I was thinking of.

Any other often neglected less obvious fluid changes like this?

 

[mathepac]

Hydraulic clutch fluid (same as brake fluid, some cars share a common reservoir with the brakes), automatic transmission fluid for auto boxes, power steering fluid unless car has electric PS, refrigerant for A/C, battery electrolyte, differential gear oil (3 of them if you have a 4x4 / quattro), [screen / headlight wash, lol].