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Scheduled Maintenance - Brake Fluid Flush

18K views 22 replies 14 participants last post by  PaulDay  
#1 ·
2015 Nissan Murano AWD Platinum - Is it required to get your brake fluid flushed every 40,000 miles on this car?
 
#6 ·
To keep the warranty in effect - yes.
To keep the brakes working - most likely not.
That said, I will have mine changed by dealer at 20k and then probably never again unless my independent mechanic says it needs it.
 
#4 ·
20-40K is too early in my opinion. Its only a 31/2 year old car. Look at the fluid color in the reservoir. If its still clear to amberish should still be fine. If it looks like a dark used motor oil then yeah. If you are a diyer and have one of those motive power bleeder or the like in your tool box like me, then sure if your feeling up to it but not yet needed. Assuming there are no braking issues.
 
#5 ·
Manual says every 20K or 10K in severe conditions. But that’s my 2019 manual. But I recall my Rogues saying the same thing (2014 Rogue Select, 2017 Rogue S, and 2018 Rogue Sv). If you’re trying to make sure you follow all of your maintenance to meet the needs of warranty or extended warranty purchase then you might want to follow that.
 
#7 · (Edited)
The new ABS systems have a lot more moving parts that are not rust resistant, some of them with smaller holes to control brake fluid.

That being said, unless your car never experiences dew point temperature changes, Dot 3 & 4 brake fluid absorbs moisture when cooling down, more so if the car is parked outside. Water equals rust, very bad for the ABS unit itself which is first in line to receive that moisture and start rusting.

Pre ABS, flushing was recommended at 60 - 80K for your brake system, because that's how long it took for moisture to start affecting braking and internal rust damage to the wheel cylinders/pistons. Go back in time and you'll find all kinds of internal rusting issues at about 40K when rear ABS was first introduced to the pickups.

In other words, unless you've installed Dot 5 (silicon based) brake fluid which doesn't absorb moisture, it is very prudent to have your brake fluid flushed every 20K to 25K miles.

If you're a DYI'er, this little tool makes flushing brakes a one man job that takes about an hour start to finish.


Have a good day.
 
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#8 · (Edited)
I flushed our brakes after 2 years and 45,000 miles. It was a bit darker, but overall not bad.

I used this kit....https://www.harborfreight.com/brake-fluid-bleeder-92924.html

I also did my s10 after.....17 years and 150k miles ?. Oops. That was completely black and disgusting. Not sure if it's related, but my abs went haywire 1 year later on the s10. So flush those brakes!
 
#9 ·
In addition to ABS, today's cars have expensive automatic emergency braking and intelligent cruise control components in the braking system... I think that may be the reason for the 20k change interval.

I can vouch for the HF vacuum fluid bleeder, I used it successfully to replace the brake fluid in my 2003.
 
#10 ·
Getting the brake fluid changed at the dealer for $140. Purchased an extended warranty so I'm trying to follow the scheduled maintenance. Not sure if I'm reading the maintenance manual correct is the CVT fluid supposed to get changed at 60K?
 
#11 ·
You should do it on all cars, regardless of make or model, about every 30,000 miles. Moisture accumulation in brake fluid occurs regardless of what car you drive or how you drive it.

Few people do it, but all of us should.
 
#12 ·
Copy of a post I posted in the 8th Generation Maxima forum about brake fluid flushing. I have a 2017 Maxima, wife has a 2019 Murano. $80 bucks every two years, I'm good with that.

Had the brake system flushed today at a local brake shop for $79 plus tax. I was not sure why Nissan would want the fluid flushed at 2 year or 20,000 miles but I'm ok with it now. I watched the tech do the job and he used a pressure system to force new fluid through the system when the bleeders were opened. He replaced all the old fluid from the master cylinder before starting and I was surprised on how dark the fluid was. The fluid removed from the wheel cylinders was lighter because it was a mixture of both old and new fluid. My bad for not photographing the beakers of fluid.
 
#13 ·
Yup, that's the proper procedure for an ABS-equipped vehicle. Brake fluid accumulates moisture over time, which lowers its boiling point and makes it more prone to brake fade if the fluid boils under heavy use. It also makes the brake system more prone to parts failure by corrosion caused by the water.
 
#14 ·
I used the pressure system to flush mine last week at 27K. Used DOT4 brake fluid to replace the DOT3 fluid that was in there.

Went a little extra by replacing the rubber flex brake lines with a new Stainless Steel braided brake line to each tire. Creates a little bit firmer of a brake pedal feel, that won't decrease as a rubber flex brake line will as it ages and expands when pressure is applied.

Have a good day.
Image
 
#15 · (Edited)
Similar to what Paul did, I replaced all the brake lines in my Datsun 280ZX with hoses that used a stainless mesh over the hose. Those rubber hoses were more than 20 years old, and it made an immediate but slight difference in pedal height, and resulted in firmer pedal feel. The pedal didn't travel as far down and pedal pressure was more immediate.

Note that with 20-year-old brake hoses, it can be assumed that they were old enough to flex more than a little when the pressure of the hydraulic system was applied. However, you could expect a difference with any vehicle due to the difference of the materials used.

Also please note that many of these hoses (mine included) are not DOT-approved and technically illegal for street use. They should be inspected periodically.
 
#16 ·
Also please note that many of these hoses (mine included) are not DOT-approved and technically illegal for street use. They should be inspected periodically.
StopTech Stainless Steel Brake Lines - Kit
Complete set of DOT-compliant lines for an improved pedal feel

Please do a little research before making factual statements, seeing that viewers trust your judgement.

Sorry, I couldn't find one manufacturer that didn't list their stainless steel brake lines as DOT compliant.

Have a good day.
 
#18 ·
1 QT of Castrol DOT4 will do, cost should be less then $10.

Have a good day.
 
#23 ·
#22 ·
Dot 4 will have a higher boiling point which is good for one that drives on mountain roads. Here in the desert it would be good also. However there is no free lunch. Dot 4 will absorb water more quickly than dot 3. I go by time as well as mileage. I don't drive many miles so I change at around 4 years Max. One other thing . Never mix dot 5 in your system as it cannot mix with dot 3 or 4. Dot 5.1 can be mixed. The advantage of 5.1 is higher boiling point than dot 4 but it will absorb water faster and need to be changed like 2 years. Brands will also have different specs but will be close overall.