[McLin]

Hi, I have a Lumina Sedan year of construction 98 and if I brake the brake / or the whole cat stutters the, but it is not the engine, the engine goes on nicely around, so if I brake Wobbling the car body and with go on further.
In front I have changed the brake pads in last years, the test 2 months ago the car has existed successfully and brake value are OK.
Mine oppinion is the brake fluid, coz i think the fluid is 3 or 4 years old.
Can be the sign for old liquid?