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Thread: Towing in 4th

  1. #1
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    Default Towing in 4th

    Some useless information perhaps. We just returned from an epic Kgalagadi trip from Durbanville. We traveled with the Hilux 2.8 manual and trusty Miskruier in tow. We did the trip up via Brandvlei/Kenhardt and the trip down via Springbok (had to visit Augrabies ).

    Was our first longer tow with the 2.8 Hilux (had a 3.0 d4d Fortuner for 13 years prior) and it did well. Stock standard with bit of a lift but same Bridgestone tyres it came with in 2017 ( I bought it last year). Gave me 12.2l/100km doing GPS speed of 110km/h mostly. Most of it was done in 4th. So what is your opinion about towing in 4th....for me the fuel consumption is not really different to change to 5th on level/downhill roads.
    Jannie
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    Default Re: Towing in 4th

    Quote Originally Posted by cheetah View Post
    Some useless information perhaps. We just returned from an epic Kgalagadi trip from Durbanville. We traveled with the Hilux 2.8 manual and trusty Miskruier in tow. We did the trip up via Brandvlei/Kenhardt and the trip down via Springbok (had to visit Augrabies ).

    Was our first longer tow with the 2.8 Hilux (had a 3.0 d4d Fortuner for 13 years prior) and it did well. Stock standard with bit of a lift but same Bridgestone tyres it came with in 2017 ( I bought it last year). Gave me 12.2l/100km doing GPS speed of 110km/h mostly. Most of it was done in 4th. So what is your opinion about towing in 4th....for me the fuel consumption is not really different to change to 5th on level/downhill roads.
    Donít you have 6 gears?
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    Default Re: Towing in 4th

    Quote Originally Posted by Hedgehog View Post
    Donít you have 6 gears?
    I wouldn't recommend using 6th gear when towing something heavy.
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    William

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  5. #4
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    Default Re: Towing in 4th

    Interesting post.

    Just came back from a hunt in Pongola.

    Going down - 10.4km/l towing a carcass trailer.
    Coming up (to the Free State) - 8.5.

    Makes sense - going down obviously downhill and empty trailer.

    Coming up - total trailer weight around 750kg.

    What I found was that going up hills, 4th gave best consumption + power.

    But on flats/downhills, 5th gave better consumption.

    Also a 2.8 hilux, slightly raised and permanent roof rack.

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    Default Re: Towing in 4th

    With a manual box you really should target the direct drive gear for heavy towing. It used to be 4th gear, but the 6 speed boxes may be different.

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  9. #6
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    Default Re: Towing in 4th

    Quote Originally Posted by Hedgehog View Post
    Donít you have 6 gears?
    Yes it does have 6 gears, both 5 and 6 is overdrive...4th is direct drive.
    Jannie
    2017 Hilux GD6 4x4 MT
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  11. #7
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    Default Re: Towing in 4th

    Quote Originally Posted by Bacon View Post
    Interesting post.

    Just came back from a hunt in Pongola.

    Going down - 10.4km/l towing a carcass trailer.
    Coming up (to the Free State) - 8.5.

    Makes sense - going down obviously downhill and empty trailer.

    Coming up - total trailer weight around 750kg.

    What I found was that going up hills, 4th gave best consumption + power.

    But on flats/downhills, 5th gave better consumption.

    Also a 2.8 hilux, slightly raised and permanent roof rack.
    Bushlapa Miskruier is about 850kg empty with more drag than a luggage trailer. Think we were loaded at about 1100kg estimate...dit not load much as we loaded the bakkie with the heavier items.

    With towing my normal luggage trailer, even loaded I rarely use 4th in the same situations as with the Miskruier...donít really impact the driving style too much.

    The way up I used 5th bit more as a bit of a test but is just resulted in changing more gears, not due to loss of speed but more due to me not wanting the engine to labor or the ďruleĒ of not towing heavy loads in overdrive.
    Jannie
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    Default Re: Towing in 4th

    Quote Originally Posted by willben View Post
    I wouldn't recommend using 6th gear when towing something heavy.
    Agree
    Jannie
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    2017 Fortuner GD6 4x4 MT
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    Default Towing in 4th

    Quote Originally Posted by willben View Post
    I wouldn't recommend using 6th gear when towing something heavy.
    Thatís not what I said
    My question was related to him stating he towed in 4th when he could have towed in 5th

    Edit:

    So I went and checked and learned the following:

    Both the 5th gear and the 6th are overdrive ratios on the hilux..

    Interesting

    Now I understand why cheetah said he tows in 4th, because 4th is the Hiluxís direct (1:1) gear
    Last edited by Hedgehog; 2021/05/03 at 04:42 AM.
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    Default Re: Towing in 4th

    Attached are the Ratios for the 6 speed box!
    Attached Images Attached Images  
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    Default Re: Towing in 4th

    Just watched this video on youtube:https://zh-cn.facebook.com/berrimadi...9890598497633/
    They explain this very well...
    Last edited by Sias; 2021/05/03 at 02:42 PM.

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    Default Re: Towing in 4th

    What I would like to know is, on what weight do you have to start using the direct drive gear?
    Surely you don't have to tow a Venter trailer in 4th.
    Willie Knoetze

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    Default Re: Towing in 4th

    Quote Originally Posted by FWM View Post
    What I would like to know is, on what weight do you have to start using the direct drive gear?
    Surely you don't have to tow a Venter trailer in 4th.
    I guess that would be different for every gearbox. If you want to be safe, tow in direct gear.
    If you do have some feel for driving, I would say that towing in an overdrive gear is fine as long as the vehicle holds speed easily. You develop a feeling for how much you have to press the accelerator pedal down for what speed. If you feel you have to put more foot, shift down.
    Level cruising with a trailer shouldn't be much of a problem. Inclines, shift down.
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    Default Re: Towing in 4th

    Quote Originally Posted by FWM View Post
    What I would like to know is, on what weight do you have to start using the direct drive gear?
    Surely you don't have to tow a Venter trailer in 4th.
    how long is a piece of string... there is no fixed answer. Haven't towed with a manual car in ages but when I did I made sure to drive it the way an auto box would manage the gears, never have large throttle openings in overdrive gears, cruising on a level road no problem but the moment you need to step on it, gear down immediately. If you need full throttle to get up that hill, even with a venter then its better to drop a gear.
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    Default Re: Towing in 4th

    Interesting, I tow a fairly heavy Ratel, when loaded for an extended trip I would guess 1.5 - 1.6 ton, however with a 2.8 auto Hilux.

    I normally lock the auto box in 5th and it really needs a steep hill before itíll select 4th, either on cruise control or foot.

    Speed obviously matters a lot, but at 110 itíll remain in 5th 95%+.
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    Default Re: Towing in 4th

    Quote Originally Posted by DCTheron View Post
    Interesting, I tow a fairly heavy Ratel, when loaded for an extended trip I would guess 1.5 - 1.6 ton, however with a 2.8 auto Hilux.

    I normally lock the auto box in 5th and it really needs a steep hill before itíll select 4th, either on cruise control or foot.

    Speed obviously matters a lot, but at 110 itíll remain in 5th 95%+.
    That gearbox would probably have a torque converter, I wonder if locking it in 5th could potentially overheat the torque converter and damage it if you drive it too hard with a heavy trailer?

  25. #17
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    Default Re: Towing in 4th

    I think moderate weight can be towed in overdrive gears if:

    - You know your vehicle's torque curve
    - You are an attentive driver (keep an eye out for inclines, wind, revs drop, etc)

    If not, you will put strain on the drivetrain. A (good) autobox obviously negates the above.
    Last edited by Kambro; 2021/05/03 at 04:22 PM.

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    Default Re: Towing in 4th

    Quote Originally Posted by Skylark View Post
    That gearbox would probably have a torque converter, I wonder if locking it in 5th could potentially overheat the torque converter and damage it if you drive it too hard with a heavy trailer?
    All auto boxes have a torque converter, but yes you may have a point for those unlike me who are very in tune with not driving (especially towing) with the torque converter unlocked, it will quickly increase the oil temp.

    I am in the habit to select a lower gear as soon as the torque converter unlocks, like in the FJ. My Hilux has a separate torque converter lockup installed, thus drive above 80Km/h like a manual, apart from the fact that it will automatically select a lower gear if it starts to labour.

    Also, like mentioned already, one should be in tune with your vehicle, as soon as you need more than say half throttle you should select a lower gear or don't drive as fast. I very rarely use full-throttle, perhaps a quick overtake whilst towing. I then also use the power button, which will automatically select a lower gear.

    The OP has a manual and this requires a different mindset as there is no auto box which "can think for itself "
    Last edited by DCTheron; 2021/05/03 at 04:36 PM.
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  28. #19
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    Default Re: Towing in 4th

    Towing in 4th gear were more directed at the older gearbox designs where the 5th gear were an add-on at the back with reverse gear.
    Most of the new designs have all gears on the lay and main shafts making them super strong. Most of them can handle up to 800Nm.
    I do not think 6th is for towing as it is a super low overdrive aimed at saving fuel.

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    Default Re: Towing in 4th

    Quote Originally Posted by Kambro View Post
    I think moderate weight can be towed in overdrive gears if:

    - You know your vehicle's torque curve
    - You are an attentive driver (keep an eye out for inclines, wind, revs drop, etc)

    If not, you will put strain on the drivetrain. A (good) autobox obviously negates the above.
    Don't want to go off topic but the question that now arises, and interested to know from the gurus - is the auto box in the 2.8 GD-6 regarded as a 'good' box?
    Manfred

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