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mfeodoroff Profile
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Date Registered: 09-2012
Location: Brisbane
TOTAL POSTS: 309
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Re:


I mostly do town driving, so getting under 10l/100kms is a dream for me.

My first few tanks were around 12l/100, and then I fitted the K&N and last two tanks are 11l/100.
That was all on 91RON, and now I'm trying 98 to see if I get the same difference I got in my old Astra.

The few highways runs we've have been down around 9l/100km (on 91RON), averaging around 100kms/hr (a bit at 110 and some at 90, the rest at 100).

It's roughly on par with our 2.3l Mazda6 which is far more aerodynamic.

Cheers,
Mark

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Mark (X-2639)
2011 ST Series IV 4x4 with CVT in Precision Grey
Cooper CS5s, Tinting, Towbar, Bonnet Protector.
Mods: Steering Wheel Lights, Bash Plates, DBA Slotted Rotors


4/May/2013, 5:07 pm Link to this post Send Email PM   Send Private Message Blog
 
da houghsta Profile
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Date Registered: 05-2013
Location: Southern River, WA
TOTAL POSTS: 39
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Re: Fuel consumption (T30 & T31 2.5LT Petrol Versions)


Hi All,

I have some tables that I have put together which I have updated every time I have filled up the car since I have bought it (always filled each time to make it accurate). From the first fill-up, I decided to do a test and fill up only with only 98 octane for a few fills, something I do not normally do to see if it really does improve fuel economy and power. I did notice a little more power... but the fuel stats you can see for yourself. You may need to click on the photo to enlarge to read.

I will point out though, I did do a trip down to Walpole towing my 14' Tracker Superguide bream/bass boat which did use a lot of fuel on the 98 where I did minimal towing when using the 91. However I have just come back from a 1900km+ trip to Carnarvon with the kayak on the roof (just back tonight actually!). One thing that I was surprised at, whenever I do a long distance run, I usually use more fuel than around town! I usually drive to and from work (Southern River to Nedlands, 35km each way 5 days a week), which is usually freeway in peak traffic conditions. The long runs I have done were the Blackwood trip and Carnarvon and both were with the kayak on the roof. I honestly thought I would still get better milage than around town - I often had the yak on top of my old Barina for long trips and it got better fuel economy on long trips - I would have thought that would affect the Barina more than the X-Trail. Any thoughts?

Trip to Carnarvon and back though, with the kayak on the roof, was 1927.1km, 213.91L and $326.85 which makes it 11.1L/100km and 21.19MPG. There is one unusual reading though when I filled at Billabong Roadhouse from Carnarvon which doesn't make sense, it says that run was 12.58L/100km where all the rest were between 10.74 and 10.98L/100km (very close numbers really!!) So I'm wondering how accurate that fuel station is personally... All were cruising using cruise control at 3000rpm (about 117km/h indicated - probably about 112km/h actual).

Anyway, after doing a few thousand kays on both 91 and 98 unleaded, I cannot say I will use the 98 at all! The power increase was minimal and I actually seem to use the same fuel, if not more than on 91!!

Fuel usage from being bought using 98 Unleaded
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Fuel usage using only 91 Unleaded
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Uploaded with ImageShack.us

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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
2/Jun/2013, 12:11 pm Link to this post Send Email PM   Send Private Message Blog
 
VikingTrail Profile
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Date Registered: 05-2013
Location: Melbourne
TOTAL POSTS: 125
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Re:


First full tank of BP Ultimate in 95% Melbourne city driving and my average was 10.4 litres per 100km. I Doubt the corporate monkey that drove my car for its first 8,000km ever uses decent fuel so I expect that will get a bit better but it's still not too bad.

Will be doing 2,000+ km this June long weekend of mostly highway so am keen to see those figures, as well as get some more BP Ultimate goodness thought the engine.

---
Kris (X-3109)
2012 T31 Series IV Ti

Mods:
LED parkers, reverse lights, number plate lights
Chrome indicator lights (no more fried eggs)
Crystal Vision 4300k high beam lights
Steering wheel lights enabled
Top box 12v power socket
3/Jun/2013, 9:06 am Link to this post Send Private Message Blog
 
mfeodoroff Profile
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Date Registered: 09-2012
Location: Brisbane
TOTAL POSTS: 309
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Re:


I found a slight gain running ultimate over 91, in terms of performance and economy.
I generally found in peak hour traffic there was limited gain, but when allowed to keep momentum up the fuel usage went down. For the 15c/l difference (and my usage patterns) I'm most likely to use 91 can run Nulon TFSC cleaner through every 5000kms or so...unless I know I'm heading on a trip and might give it the good stuff then.

---
Mark (X-2639)
2011 ST Series IV 4x4 with CVT in Precision Grey
Cooper CS5s, Tinting, Towbar, Bonnet Protector.
Mods: Steering Wheel Lights, Bash Plates, DBA Slotted Rotors


4/Jun/2013, 3:07 pm Link to this post Send Email PM   Send Private Message Blog
 
VikingTrail Profile
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Date Registered: 05-2013
Location: Melbourne
TOTAL POSTS: 125
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Re:


Using it every now and then is OK but not as good as regular use. Regular use of 98 is good because it's maintaining, and a lot better for engine wear.

---
Kris (X-3109)
2012 T31 Series IV Ti

Mods:
LED parkers, reverse lights, number plate lights
Chrome indicator lights (no more fried eggs)
Crystal Vision 4300k high beam lights
Steering wheel lights enabled
Top box 12v power socket
4/Jun/2013, 3:54 pm Link to this post Send Private Message Blog
 
Alex70 Profile
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Date Registered: 01-2008
Location: North Rocks
TOTAL POSTS: 209
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Re:


Hi Ben

Your fuel consumption in MPG looked very low to me. And then I realised you are using a conversion from l/100km that assumes US gallons.

Australia (before metric) used imperial gallons. (1US gallon = 0.8327 imperial gallons). So to get a MPG figure that is comparable to MPG figures people are used to in Australia, you need to take your figure and divide by 0.8327. So your Carnarvon trip was 25.36mpg and your overall average is about the same. This is similar to what I get in my car.



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Alex X-740(c)
2006 Prado Petrol Automatic (sorry, but the Xtrail had to go as it gave me a taste to travel where it cannot go)
5/Jun/2013, 9:33 am Link to this post Send Email PM   Send Private Message
 
da houghsta Profile
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Date Registered: 05-2013
Location: Southern River, WA
TOTAL POSTS: 39
Reply | QUOTE
Re: Fuel consumption (T30 & T31 2.5LT Petrol Versions)


Hey Alex,

Thanks for that! I honestly didn't know that there was a difference with imperial and US gallons (I guess the US always need to be different...). So changing the formula (the chart is done automatically - I just enter the litres used, total cost and km's driven each time and it pops the rest of the figures out) and has now put my average MPG to 26.59 over 5768km using 91RON and the average MPG is 25.46 over 3439km using only 98RON (lowest is 21.75 and best is 29.38).

Can you comment on why I may have been getting a worse economy using the 98 or why I seem to use more fuel on longer drives? I will have to do a long run soon without any boat or kayak to confirm whether I use more or not. Last fill up was just in-town driving and some freeway with a few sections of hard acceleration and still got back 10.46L/100km which is less than the 10.9 average I got going to and from Carnarvon driving carefully.

---
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
8/Jun/2013, 9:09 pm Link to this post Send Email PM   Send Private Message Blog
 
Ian Ewin Profile
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Date Registered: 03-2012
Location: Newcastle, NSW
TOTAL POSTS: 471
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Re:


Ben, is yours manual or auto? My 2002 ST (manual) used to use around 9l/100km around town, but more than 15l/100km on the highway. The manual gearing definitely gives you shorter legs at higher speeds. The rev-range at 100km/h between the auto and manuals has varied from 500-1500 which can make a big difference on fuel when it comes to long trips. My experience with 98ron, even in my old exy, was always positive. Hope this helps.

---
Ian X-2305(c)
New: 2010 NT Pajero
Old: 2008 T31 Xtrail "The Monster"
The only one of her kind.. may she rest in peace :(
9/Jun/2013, 9:50 am Link to this post Send Email PM   Send Private Message Blog
 
Alex70 Profile
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Date Registered: 01-2008
Location: North Rocks
TOTAL POSTS: 209
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Re:


Ben, I would expect better on the highway but I would guess it is the kyak. It would really mess up the aerodynamics.
  
As I said, I get around 25mpg in the suburbs (ranging 22-27). On country trips (good roads, sitting on the limit which is mostly 100kph with a bit of 110kph) I get 30-32.5mpg. I was also impressed that I got 32.4mpg once on a dirt road (admittedly crusing at 80kph) with a very un-aerodynamic roof rack loaded with 4 jerry cans (and a lot of weight in the car).

I would also point out that my car is raised 2" which means there is 2" more of tyre directly pushing against the air and therefore I would expect worse fuel consumption compared to a standard Xtrail.

At 110kph my auto is running at 2600rpm Ian. Don't know how that relates to manuals.

---
Alex X-740(c)
2006 Prado Petrol Automatic (sorry, but the Xtrail had to go as it gave me a taste to travel where it cannot go)
10/Jun/2013, 10:25 am Link to this post Send Email PM   Send Private Message
 
VikingTrail Profile
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Date Registered: 05-2013
Location: Melbourne
TOTAL POSTS: 125
Reply | QUOTE
Re:


8.8 litres/100km is the best I saw on my long weekend travels. Over 2000km covered. LOVELY! emoticon

---
Kris (X-3109)
2012 T31 Series IV Ti

Mods:
LED parkers, reverse lights, number plate lights
Chrome indicator lights (no more fried eggs)
Crystal Vision 4300k high beam lights
Steering wheel lights enabled
Top box 12v power socket
11/Jun/2013, 9:19 am Link to this post Send Private Message Blog
 


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