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I was reading through the 2016 Frontier Manual, in the maintenance it's standard procedure to flush brake fluid every 20k miles.

Not going to lie, I've never done this on any of my cars. I understand it wouldn't be a bad thing due to brake fluids bring hygroscopic, just wondering if anyone is doing this.
 

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I've never owned another vehicle that requires this either. However, that being said, I borrowed a vacuum bleeder from our mechanic shop at work and did it myself for the cost of a couple quart bottles of brake fluid and about a 1/2 of my time. A lot less than the dealership wanted for the same task.

My thought was that if some remote possibility of a failure happened within the brake system, I didn't want the dealer to have any reason to claim it was due to neglect. So I have saved my receipts for any DYI work including the brake bleed.
 

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I flushed once at 25k and again at 40k (only because I had wheels off and it was convenient), but I plan to do it every 30k or so.

My last new truck was an 02 without ABS and flushing the brake fluid was not in the maintenance schedule, and I never did it.

I’ve always assumed it had to do with ABS that this truck has, but i was never sure about that.

Everything I’ve read since then tells me it’s a darn good idea regardless of whether it’s specified or not in the maintenance schedule.
 

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That's too frequently. I'll always wait at least to 30k miles.

If I were going to flush my brakes that often, I'd switch to Supertech brake fluid. It's cheap and well rated, and I'd practically always have new fluid in the system.

I use the gatorade bottle method to flush my brakes. The mityvac never seems to suck out the fluid very well for me. I just count how many pumps it takes for the res to require a refill.
 

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On my previous cars when I used High temp fluid, the manufacturer of the fluids suggested changing every 2 years. As I understand it, high temp fluid absorbs moisture quicker.
 

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I can attest that you CAN go well over 100K miles and not have a problem. Not a very good idea, probably, but going a bit past 20K seems very unlikely to vpcause problems.
 
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