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Brake fluid flush 458

Discussion in '458 Italia/488/F8' started by vincep99, Jun 1, 2017.

  1. vincep99

    vincep99 Formula 3
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    #1 vincep99, Jun 1, 2017
    Last edited by a moderator: Sep 7, 2017
    I flushed my brake fluid out last weekend; it went very quickly and effortlessly. I used a Motive Power flusher. The brakes are significantly better (less travel), probably not due to the new fluid but may have been some air in the system. You can see the difference in color (the one on the right is the old fluid)

    I wrote an entire procedure which I will post later.
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  2. 100badboy100

    100badboy100 Formula Junior
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    Sep 15, 2016
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    Hi Vince

    When was the fluid last changed?

    Be interesting to understand the interval that caused that much degradation of the fluid

    Regards

    Michael
     
  3. vincep99

    vincep99 Formula 3
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    Good question. I only met the original owner once, and I don't have his # to ask him. I will ask the dealer next time I am there.
     
  4. justthebest

    justthebest Formula Junior

    May 14, 2014
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    Looking forward to your write up.
     
  5. vincep99

    vincep99 Formula 3
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    #5 vincep99, Jun 5, 2017
    Last edited by a moderator: Sep 7, 2017
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  6. justthebest

    justthebest Formula Junior

    May 14, 2014
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    Awesome - thanks for providing such a thorough write up.
     
  7. Expat458

    Expat458 Karting

    Feb 27, 2017
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    The Sand Pit
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    Paul Healey
    Very informative. The more we can DIY the better for everyone....
     
  8. Hoagers

    Hoagers Karting

    Dec 4, 2016
    166
    Very well done. The only other suggestion I'd make is to make sure you keep a spray bottle or hose nearby just in case of fluid spillage to quickly remove anything that touches paint or black plastic.

    I also use a Motive and LOVE that thing! Used it only motorcycles and all my cars except it doesn't work on Honda cars
     
  9. Melvok

    Melvok F1 World Champ
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    According the oem service I doubt that seeing the colours.

    Which DOT did you use Vince ? DOT 5 ?
     
  10. Bowtye8

    Bowtye8 Karting

    Dec 28, 2013
    61
    Very interesting...
    I have a story I will have to type up on my dealer brake bleed experience that did not do as easy as this.
    Cliff notes.
    Bought a 458..Brake had a soft pedal. Brought to F-Dealer for Annual maint. Had them chk brakes. Agreed soft pedal and I cold bleed for 200.00. I did . Still soft pedal. Said it could be ABS pump for 9500 or mater cylinder for 2k. With advice I went with Master cylinder. 2k laer still soft pedal said I need ABS pump...All that's left in system. I held off.
    Tlak to dealer where I bought car . Sent me to private dealer...Used to work at F-dealer(old timer)
    They bleed brakes. Said it took a lot of time but flushing about 8 times did the trick. So 850.00 later pedal is perfect and good to go.
    Said possible varnish build up. Put in Full synthetic brake fluid.

    I did take action on the F-dealer and we worked out some resolution after some leg work on my end....BBB etc...
    all good now and enjoying my first F-car.
     
  11. vincep99

    vincep99 Formula 3
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    Mel,
    I used DOT 4. I double-checked what it said on the cap with what was in the owner's manual.

    I used NAPA brand simply because I have been using it for years.

    Reminds me: whatever equipment you use, make sure to flush it with denatured alcohol as soon as you are done
     
  12. justthebest

    justthebest Formula Junior

    May 14, 2014
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    What volume of fluid did it take you to flush the system?
     
  13. Melvok

    Melvok F1 World Champ
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    Otherwise the DOT 4 eats the caliper paint ... :(
     
  14. Need4Spd

    Need4Spd F1 Veteran
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    Won't the alcohol eat the Ferrari decal on the caliper?
     
  15. Melvok

    Melvok F1 World Champ
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    It (decalls + calipers) should all have been spayed with clear paint 2 layers or more ... (anyhow, I have spare decalls here if needed :) )
     
  16. vincep99

    vincep99 Formula 3
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    Jun 8, 2009
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    It takes 1 quart. Maybe could have done it with less but once you open the can you should throw the remainder out anyway.

    On the DOT4 eating caliper paint: Mel,. you are so right! I just took a brake seminar (which prompted me to take brake fluid more seriously) and he stressed that a lot.

    On denatured alcohol: the instructor at the seminar said to use this (vs. e.g. brake cleaner). I don;t know if he was thinking about the decals, but I am glad to hear that the calipers are clear-coated.

    On another note: I am putting my car in the Italian Happening at M! Concourse in Detroit this Sunday; maybe I will get an award for the cleanest brake fluid!
     
  17. Melvok

    Melvok F1 World Champ
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    :D
     
  18. justthebest

    justthebest Formula Junior

    May 14, 2014
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    Denver, CO
    So I've done a little research, and the 458 has an ABS system that will hold some small amount of fluid captive unless / until the ABS is cycled. While the volume of that fluid is relatively small, I was wondering if anyone has experience performing that part of the flush / bleed and could recommend a compatible OBD tool.
     
  19. Melvok

    Melvok F1 World Champ
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    Read post # 1 here, Vince flushed complete system ! Incl ABS.
     
  20. vincep99

    vincep99 Formula 3
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    Mel,
    Thanks for the kudos but justthebest brings up a good point. I did some research and this site sheds some insight:
    Bleeding ABS Brake Systems

    So if we want the 100% solution, we need to cycle the ABS valves. I looked also at the WSM and it does say that to flush the passages from the ABS portion, you need their tool to cycle the ABS valve.

    As far as an OBD2 tool that can do that: I think that even most of the better ones that do handle ABS can only read and erase the codes, not cycle the valves. And from I remember of mine (INNOVA), it can only handle ABS/SRS for the "Big 5" OEMs.

    I'll hook up the INNOVA this weekend
     
  21. Solid State

    Solid State F1 Veteran
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    Feb 4, 2014
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    I have always done the vacuum method for many decades. Would like to try the pressure method but have to ask - aren't you pushing air into the system when you first hook-up to the reservoir cap with the plastic line filled with air? What method do you use to get the air out of the plastic line, the top of the pressure tank and the part of the brake reservoir that contains air above the fluid?

    Seems you must evacuate all air in your device as well as the plastic lines and the reservoir before applying pressure otherwise a lot of air will push through the full system which is very much undesired. Thanks.
     
  22. vincep99

    vincep99 Formula 3
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    Very good question; all I can say is that it is not a problem. You can see the brake fluid flowing through the clear line to the reservoir and there is no entrapped air. Could be osmosis but I don't know for sure.
     
  23. Dave rocks

    Dave rocks F1 World Champ
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    You should bleed the pressure bleeder line. I have a much heavy duty unit and it has a bleeder. Also, you can set the bleeder right in the trunk that way no risk of fluid on body work.
     
  24. Solid State

    Solid State F1 Veteran
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    Not sold on this. Bleeding the line for sure but what about the air under the cap? I have on occasion let the reservoir suck a very small amount of air during the vacuum method and you basically have to start over and re-flush the entire system. On some vehicles it leads to a nasty soft pedal that's hard to get firm again. If you have anti-lock and a complex master cylinder and cross-over system then I would not let any air at all in there. Will stick with the vacuum method. Thanks for all the info.
     
  25. Dave rocks

    Dave rocks F1 World Champ
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    It would not be difficult to add a bleeder valve to the line. As far as air under the cap - simple: top off the resivior before connection the pressure bleeder.
     

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