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DPF Statistics 0 - 60,000Km

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  • DPF Statistics 0 - 60,000Km

    DPF stats after 0-60,000Km on my 2018 GXL Prado:
    ECU firmware updated early 2019. Both Custom Modes enabled.
    Kerb Mass ex driver approx 2,700Kg.
    Accessories include GVM Upgrade, Bull-bar, Winch, Twin Wheel Carrier, Drawer System, UHF, Spot Lights, Dual Battery, Tools etc.


    Click image for larger version  Name:	Kms to Regen 0-60000.jpg Views:	0 Size:	16.5 KB ID:	752963
    Click image for larger version  Name:	Kms between Regen 0-60000.jpg Views:	0 Size:	15.5 KB ID:	752964


    Mileage Breakdown:
    a. ~22,000Kms open highway (100-110Kms/hr),.
    b. ~4,200Kms tracks, sand dunes, corrugations, mountains etc
    c. The rest city driving.

    DPF regens at highway speeds (post ECU update):
    Ave Kms to complete a regen = 30+Kms
    Ave Kms between regen = ~150Kms
    Regens often ended at 4% and some at 0%

    DPF regens for city driving:
    Kms to complete a full regen = less than 20Kms
    Kms between regens = 250-350Km

    Regens on remote tracks (5-10-20Kms/hr):
    Kms to complete a full regen = 2-5Kms

    Fuel economy scenarios:
    a . City driving = 8.5 Ltrs/100Km
    b . Highway driving (Wt ~3,050Kg max) = 12-13 Ltrs/100Km,
    c. On Dunlop AT20 265/65 R17 on Factory Alloy Rims = 8.5 Ltrs/100Km, city driving
    d. On Toyo AT II, 265/70 R17 Steel Rims = 9.7 Ltrs/100Km, city driving

    Notes:
    a. trips < 5-8Km won't produce the conditions for the DPF to start a burn. This is how long it takes to warm the system up before a regen will start/resume.
    b. 5 DPF burns during 5-10-20Km/hr grinding over sand dunes and remote tracks.
    c. 2019 ECU update significantly reduced the Kms between regens at highway speeds, and significantly reduced the time to complete a regen.
    d. DPF burn quits at 8% saturation, the residual heat energy carries the burn to 6%, and sometimes 4% or all the way to 0%.

    DPF Manual button has Custom Mode enabled. I can manually initiate a burn when the DPF level is over 28% before driving over dry grass. And it works!
    Last edited by RPP; 02-08-2020, 11:14 AM.

  • #2
    Thanks RPP, some very interesting info there - thanks for sharing!

    It's interesting that the regeneration is now performed more often for highway driving. I guess because that is a more optimal situation to do so, so the Prado is taking every chance it has to do it. It doesn't really want to do the burn at city speeds, so waits longer there, hoping you're going to go for a highway drive.

    Did you get Toyota to install the manual DPF button for you? Was it hard to convince them to install?

    How are you measuring the DPF saturation, ScanGauge?

    Comment


    • #3
      Originally posted by Grinbot View Post
      Thanks RPP, some very interesting info there - thanks for sharing!

      It's interesting that the regeneration is now performed more often for highway driving. I guess because that is a more optimal situation to do so, so the Prado is taking every chance it has to do it. It doesn't really want to do the burn at city speeds, so waits longer there, hoping you're going to go for a highway drive.

      Did you get Toyota to install the manual DPF button for you? Was it hard to convince them to install?

      How are you measuring the DPF saturation, ScanGauge?
      Ahoy Grinbot,

      Pre ECU update it was taking 70-90Kms to do a burn at highway speeds. One time it took over 100Kms.
      My guess is that at highway speeds the DPF burn was struggling to keep ahead of the sooting-up process.
      Post ECU update it happens more often and therefor much faster.

      I asked my Dealer to retrofit the manual DPF button last year.
      They had to send a formal request, with the usual rationale, to Toyota Australia as it is a configuration change under warranty.
      It was all done for free tho.
      However my Dealer couldn't get Custom Mode to work after 4 attempts.
      I found another Dealer who got it to work first go.

      Yes, I monitor the DPF% and DPF burn temperature on ScanGauge.

      Comment

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