![]() ![]() ![]() If so, it’s time for a brake fluid flush service. Inspect the brake fluid to see if it’s brown, black, or sludgy. Only they can tell if you need a brake job or another repair service to rectify your car’s brake performance. So it’s best to get your brake system components inspected by a certified technician. Bad braking efficiency can also happen due to an underlying problem, like damaged tire tread, shocks, or struts. However, it can also mean something else if the brake system is struggling, such as brake caliper, brake pad, or brake rotor issues. Poor brake performance can signify contaminated or bad brake fluid, which requires a brake flush. This indicates you need a brake fluid change. You may also notice that you need to push the brake pedal entirely to the bottom before it slows and stops your car. Over time, moisture will accumulate in the brake fluid (a hydraulic fluid), resulting in a spongy or soft feel when you press the brake pedal. However, you’ll also need a brake system flush when certain symptoms show up, like: 1. This’ll prevent a deeper, more expensive brake system repair - like total brake failure. It's probably overkill to change over winter.For car maintenance, it’s recommended you get a brake fluid flush every two years or 30,000 miles, depending on your driving and braking patterns. I use Motul 600 during the track season and last year switched back to BMW OEM fluid over winter and have previous used a generic European DOT4 fluid in the past. Technically BMW call for DOT4 low viscosity, rather than regular DOT4 but I'm not sure that it would make that much of a difference. You do not really want to be mixing fluid, so sticking to the same fluid is advisable to avoid needing to do very thorough flushes each time. You can consider cost, but I'd consider availability as probably the key criteria. I haven't really heard of there being significant differences between manufacturers, I would just recommend finding a decent fluid with a high dry boiling point (since with tracking we should be changing frequently enough to never approach the wet boiling point). The difference between fluids are in wet and dry boiling points and I suppose some differences in whether the fluids might react differently to the components in the brake system over time. I really don't see the point in trying to save $100 on brake fluid, if you're at the 24 month mark I wouldn't rush out to get it changed ASAP but whenever a service is done I would change it.įor everyday street driving the fluid will not really make a difference, their feel will not really be different. It's unlikely that you'll see issues within 5-7 years if you extend the interval to 3 or 4 years but you likely will see issues past that and the cost to repair those issues is likely to be more expensive than the $200 you saved by extending the interval. Going over the 2 year interval is not going to rust your components in 2 years, so if you stretch the interval it will almost certainly have a negative impact on your brake system. The actual brake fluid costs around $20, when I've had a shop change brake fluid I paid $100. Brake fluid, because it is hydroscopic will absorb water over time so time is the only thing that matters other than extreme use. Brake fluid does not care about mileage unless it's hard mileage (track use, or with trucks it would be towing), it makes no difference if you were driving tons of miles every year or driving 1000 miles per year. ![]()
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