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Date Registered: 12-2013
Location: Mt Isa, QLD
TOTAL POSTS: 125
Reply | QUOTE
Is towing in 6th gear a fallacy?


Hi All,

Correct me if I'm wrong, but after doing a few various site searches and general browsing through the towing topics I didn't find a direct thread that related to towing in top gear. I did come across a thread (I believe in the caravan related topics) about towing and shortly discussed not using sixth gear.

Q: should towing in 6th gear be avoided?

Primarily wanting some advice for my Manual Petrol T31 series II but obviously open to provide advice on all other series and transmission types.

My only trip thus far was Brisbane to Mt Isa (1850km) with the Exy fully loaded and so too the 8'x5' high sided boxed trailer. With the slight hills between towns I was changing between 6th and 5th regularly. However once I finally reached long flats the Exy travelled well at 110kmh in 6th with Cruise on. Although when I travelled the last 120km from Cloncurry I used 5th all the way on Cruise at 100kmh travelling up all the larger hills very well and I was quite impressed.

Can someone please provide some facts on traveling in 6th gear (manual petrol)?

Thanks,
Ben

---
Benjamin X-3439
Mt Isa, QLD
05/10 T31 Exy, 2.5L Manual ST
K&N + A/C, 63mm ECB, 20" LED, 220 HIDs, TJM Bashplate, 2" Susp Kit, H/D Towbar, Whispbars, 235/70R16 697s, Hi-Tech Exhaust
To do: Brakes, Strut Bar, Side Steps, 6" Head Unit
26/May/2014, 10:46 pm Link to this post Send Email PM   Send Private Message Blog
 
cooch t31 Profile
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
Reply | QUOTE
Re:


As a general rule I used and still do was if the revs went below 2000rpm change down.
The "experts' say that you should always tow in 4th as it is the strongest gear being 1:1.
It really all depends on the road you will be driving on.

---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

27/May/2014, 6:48 am Link to this post Send Private Message
 
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Date Registered: 12-2013
Location: Mt Isa, QLD
TOTAL POSTS: 125
Reply | QUOTE
Re: Is towing in 6th gear a fallacy?


Cheers Tony

4th gear, really?

I can't remember whether it sat at 1,750rpm or 2,750rpm but I think it was the latter while I was travelling in 6th at 110kmh. I noticed that I could get it up to 100kmh in 5th and then if the road was flat or slight decline it would then reach 110kmh and I could put it in 6th with cruise control and the Exy held that speed well.

Ben

---
Benjamin X-3439
Mt Isa, QLD
05/10 T31 Exy, 2.5L Manual ST
K&N + A/C, 63mm ECB, 20" LED, 220 HIDs, TJM Bashplate, 2" Susp Kit, H/D Towbar, Whispbars, 235/70R16 697s, Hi-Tech Exhaust
To do: Brakes, Strut Bar, Side Steps, 6" Head Unit
27/May/2014, 5:44 pm Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 05-2010
Location: Adelaide
TOTAL POSTS: 599
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Re: Is towing in 6th gear a fallacy?


When I tow with the CVT I tow at a speed that keeps my revs around 1800 to 2200 rpm. The only reason for this is fuel economy and sometimes with a strong head or cross wind my speed is only 70km/h.

You could use this as a guide for manual gear selection ie 6th gear if tail wind, 5th if light winds and you want to travel at 100km/h or 4th gear if headwind is significant.

My feeling is 6th gear could be a bit high if towing anything reasonably larger than a very low 14ft poptop.

The Xy's engine loves to rev and the load is less on things in a sensibly lower gear if you want to do 110km/h or are going up hill.

---
2007 X-Trail T31 ST-L

Xy going vertical at Bendleby Station . . .

27/May/2014, 9:59 pm Link to this post Send Email PM   Send Private Message
 
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Date Registered: 12-2013
Location: Mt Isa, QLD
TOTAL POSTS: 125
Reply | QUOTE
Re: Is towing in 6th gear a fallacy?


Hi all,

Admin please remove if not allowed,
Below is hopefully a link that explains that towing (in a 5 gear gearbox or aka overdrive) should be avoided under load. Due to the positioning of the 5th gear on the drive shaft. I would think that this would apply to Exy and therefore drop a gear while towing.

I know the link is fb based but I couldn't find one on you tube or google that matched.
https://m.facebook.com/story.php?story_fbid=304418323049844&id=100004450362511

Cheers

---
Benjamin X-3439
Mt Isa, QLD
05/10 T31 Exy, 2.5L Manual ST
K&N + A/C, 63mm ECB, 20" LED, 220 HIDs, TJM Bashplate, 2" Susp Kit, H/D Towbar, Whispbars, 235/70R16 697s, Hi-Tech Exhaust
To do: Brakes, Strut Bar, Side Steps, 6" Head Unit
28/May/2014, 12:57 am Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 05-2013
Location: Southern River, WA
TOTAL POSTS: 38
Reply | QUOTE
Re:


In a six speed box, is fifth a 1:1 ratio as fourth is in a 5 speed box? I only ask as I have also been told to use fourth in my car towing my boat (5spd manual) as the load is much lower on the gearbox and the bearings. I feel much more power in fourth obviously but in a trip to Albany towing the boat, I used fourth mostly on the way down and the fuel light came on about 20km out of Albany (400km travelled although usually in mine the fuel light comes on when I still have 10-12L left in the tank). On the way back I used mostly fifth as a test and I had a little less wind, but had a quater tank left when I got home. I think if I was towing long distances regularly, I'd use fourth (probably fifth in your case with a 6spd if I got it right), but I still use my high gear a lot. I know a lot of guys replace bearings etc in their gearbox if they do it too often as the load is quite large. 1000rpm difference for me at 100kmh. Hope that helps!

---
2006 X-Trail Ti 5spd Manual
50mm Strut Spacers from Superior Engineering
235/70 R16 Toyo Open Country tyres x5
Hella spotlights
Alpine double DIN head unit

Ben Hough - X-3108
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Date Registered: 06-2008
Location: Blue Mountains, NSW
TOTAL POSTS: 5966
Reply | QUOTE
Re:


All gearboxes share a 1:1 ratio in 4th.
The Exy if I remember correctly has it's 5th gear at 0.6 over and 6th has a 0.8 over.

---
Tony X-891c

HERE is my D22 Navara
HERE is my old 2008 T31, ST Series1

28/May/2014, 6:19 am Link to this post Send Private Message
 
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Date Registered: 12-2013
Location: Mt Isa, QLD
TOTAL POSTS: 125
Reply | QUOTE
Re: Is towing in 6th gear a fallacy?


So I just looked at the PDF that describes the specifications of various current X-Trail models and it says:
Manual 4WD ST
- 1st Gear 3.727
- 2nd Gear 2.043
- 3rd Gear 1.392
- 4th Gear 1.055
- 5th Gear 0.865
- 6th Gear 0.732

Manual 4WD TS
- 1st Gear 3.727
- 2nd Gear 2.043
- 3rd Gear 1.322
- 4th Gear 0.947
- 5th Gear 0.723
- 6th Gear 0.596

Auto 6spd (with manual mode) 4WD TS
- 1st Gear 4.199
- 2nd Gear 2.405
- 3rd Gear 1.583
- 4th Gear 1.161
- 5th Gear 0.855
- 6th Gear 0.685

So yes 4th gear is closest to a 1:1 ratio, surely towing in 5th gear would be ok? Maybe if you were towing to the X-Trails limits (2t fully loaded etc) 4th would need to be used but simply towing a box trailer and being fully loaded still wouldn't put too much strain on 5th?

Perhaps keeping an eye on the tachometer would be a good way to justify which gear you should use after first taking into account the total GVM of your driving including trailer.

I will probably avoid using 6th while I'm towing a heavy load, as I'll be towing Mt Isa to Brisbane next month and the trailer will probably only weight 0.5 including goods I will consider using 6th.

Thoughts?


---
Benjamin X-3439
Mt Isa, QLD
05/10 T31 Exy, 2.5L Manual ST
K&N + A/C, 63mm ECB, 20" LED, 220 HIDs, TJM Bashplate, 2" Susp Kit, H/D Towbar, Whispbars, 235/70R16 697s, Hi-Tech Exhaust
To do: Brakes, Strut Bar, Side Steps, 6" Head Unit
28/May/2014, 10:15 am Link to this post Send Email PM   Send Private Message Blog
 
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Date Registered: 12-2013
Location: Mt Isa, QLD
TOTAL POSTS: 125
Reply | QUOTE
Re: Is towing in 6th gear a fallacy?


Just following up from my last post.

Travelled from Mt Isa to Brisie in 5th pretty much all the way on cruise control doing 100-110kmh when driving conditions suited.

Drove just the XTrail to Sydney and got the Hi-Tech upgrade and obviously drove back to Brisie to pick up my trailer.

The return trip was the same, I.e. Travelled in 5th gear pretty much all the way while safe to do 100-110kmh. The exhaust upgrade definitely allowed me to accelerate quicker and it easier to maintain 110kmh but there seemed to be no power gains travelling in 6th and it still would lose speed in top gear if the road wasn't flat or the headwind opposed me.

In summary, I will always travel in 5th gear with my box trailer as it's less than 1t. Should the XTrail want to lag or steep hills I would of course drop down to the appropriate 1:1 gear.

Cheers,

Ben

---
Benjamin X-3439
Mt Isa, QLD
05/10 T31 Exy, 2.5L Manual ST
K&N + A/C, 63mm ECB, 20" LED, 220 HIDs, TJM Bashplate, 2" Susp Kit, H/D Towbar, Whispbars, 235/70R16 697s, Hi-Tech Exhaust
To do: Brakes, Strut Bar, Side Steps, 6" Head Unit
1/Sep/2014, 11:47 am Link to this post Send Email PM   Send Private Message Blog
 


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