Do not for a moment trust the majority of brake fluid testers.
The ones that work boil the fluid and check the temperature that it boils at and these are near £800 to £1,000.
The testers most garages have are a visual unit or an electric unit that tries to check water content via butting a current via the fluid.
There are no proven results from the cheaper units and very few garages can afford to purchase the very expensive units therefore I would change the fluid at the advised intervals.
As always there are people on this forum and other motoring talking shops that are proud as punch in saving the cost of changing brake fluid, not changing crush washers on drain plugs and not changing antifreeze and boast of driving on tyres over 10 years old.
To them a penny saved is a prisoner indeed.
This is oh so true.
There comes a point where the “economies” become dangerous, lead to long term problems, breakdowns etc.. Yes.....look for good deals when buying oil/antifreeze,and others such as Halfords offers (I bought oil for two changes last time at the discounted offer) but, come on, when safety is a prime consideration there should be no corner cutting. My brake/clutch fluid is due a change this winter after 2 years. It will be done. Antifreeze too despite it looking ok.
I do draw the line at replacing the air in the tyres with fresh Malvern Hills air though
