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Open Roads Forum  >  Tech Issues

 > Brake fluid change?

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EV2

South Dakota/Arizona

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Posted: 10/22/19 11:39pm Link  |  Quote  |  Print  |  Notify Moderator

Lwiddis wrote:

And your post caused me to check. GM’s recommendation is no fluid replacement necessary until somewhere after 240,000 miles on my 2029 Chevy 1500 LTZ Z71.


Good to know the progress made 10 years in the future!

goff1256

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Posted: 10/23/19 07:55am Link  |  Quote  |  Print  |  Notify Moderator

My theory is more maintenance less repair I also use speed bleeder which makes the process very simple


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ksg5000

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Posted: 10/23/19 12:10pm Link  |  Quote  |  Print  |  Notify Moderator

ktmrfs wrote:

As to when to change, back in 60's and 70's when reservoirs were more open to air, even in 2 years fluid could have lots of water and junk in it. By the 90's the reservoir systems became much more enclosed and fluid didn't degrade near as much. I still pressure bleed every 2 years, but the fluid looks almost new.


Yep. Brake fluid change is cheap and having brake issues when your one the road is a real PIA.


Kevin

RLS7201

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Posted: 10/23/19 02:58pm Link  |  Quote  |  Print  |  Notify Moderator

All brake fluid is synthetic.
Brake fluid will absorb moisture over time and reduce the boiling point. Because our MH brakes work hard we want to maintain a high boiling point for safety reasons.
Yes, I change my brake fluid every two years.

Richard


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ajriding

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Posted: 10/23/19 04:32pm Link  |  Quote  |  Print  |  Notify Moderator

There is no such thing as synthetic oils. Synthetic motor oil is just higher quality petroleum. Syn brake fluid is just a higher number. It all comes from oil. The higher number fluids usually can take higher temps, so maybe the "synthetic" is a better choice for a heavy vehicle, but not all brake systems are meant for just any fluid you pick out.

You can never change brake fluid if you prefer. As vehicles started to get better and last longer and need less maintenance then we started seeing things like "change brake fluid" or "rotate light bulbs" .

Yes, some water particles might get in the brake fluid and have an effect, but you can run the life of the vehicle and never change the fluid, it will still work. Do change your brake pads and do use high quality pads for a motorhome. Cheap pads are the wrong choice.

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Posted: 10/23/19 06:11pm Link  |  Quote  |  Print  |  Notify Moderator

dang aj, I was hesitant to say that.

I never have changed any brake fluid in the last 10 plus years.

I never had any consequences in modern day vehicles. hammered my last TV down the road 160K miles and 13 yeas with nary a problem with the fluid. [emoticon]

RLS7201

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Posted: 10/24/19 06:43pm Link  |  Quote  |  Print  |  Notify Moderator

ajriding wrote:

There is no such thing as synthetic oils. Synthetic motor oil is just higher quality petroleum. Syn brake fluid is just a higher number. It all comes from oil. The higher number fluids usually can take higher temps, so maybe the "synthetic" is a better choice for a heavy vehicle, but not all brake systems are meant for just any fluid you pick out.

You can never change brake fluid if you prefer. As vehicles started to get better and last longer and need less maintenance then we started seeing things like "change brake fluid" or "rotate light bulbs" .

Yes, some water particles might get in the brake fluid and have an effect, but you can run the life of the vehicle and never change the fluid, it will still work. Do change your brake pads and do use high quality pads for a motorhome. Cheap pads are the wrong choice.


All brake fluids are technically "synthetic" in that they are man made and do not contain a petroleum base.

allen8106

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Posted: 10/25/19 12:41pm Link  |  Quote  |  Print  |  Notify Moderator

I've never changed the brake fluid in any vehicle I've owned in 45 years of owning cars/trucks and have never had an issue that I'm aware of.


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otrfun

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Posted: 10/25/19 04:42pm Link  |  Quote  |  Print  |  Notify Moderator

We siphon (with a vacuum brake bleeder) all the brake fluid out of the reservoir every year or two on all our vehicles, then refill it with new synthetic brake fluid. Takes about 12-16 oz. to refill the cars and 32 oz. for our Ram 3500. Literally takes all of 2-3 minutes to do. Can't say there's some dramatic improvement in braking, but it's nice to see the fluid clear with so little effort and cost. Still do the occasional brake bleed. When we do, the brake fluid is significantly clearer vs. how it normally looks when we don't do the siphon and fill.

opnspaces

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Posted: 10/26/19 01:15pm Link  |  Quote  |  Print  |  Notify Moderator

I put changing brake fluid right up in the same category as injector flushing and the 3000 mile oil change. I view all three as nothing more than an add on money grab for the service writer.


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