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DogTrail
X-TRAIL FANATIC
Date Registered: 05-2012
Location: Sunshine Coast
TOTAL POSTS: 481
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Re: Re:
quote: ^^ I would think 10,000 to 12,000 kms would be enough for the rings to bed in.
I would have expected the same, however, going by fuel consumption figures over time on my motor, in that instance the actual experience does not fit that theory.
Also, I thought the 10w30 was semi-synthetic anyway.
Economy improved the most after about 15000 Km but I could not say whether the improvement was because of the freeing of the motor or the gearbox.
It will differ from motor to motor and by how hard the rings are worked in the first 10,000 Km or so before the first oil change at 10k.
I used a conservative approach and the figures show that this engine has settled into returning about 12 Km/L (or 8.5 L/100 Km ) after 25,000 Km.
The first 1,000 Km I could not get below 10 L/100 Km - then it gradually became better.
In my own particular experience, fuel economy / mechanical efficiency gradually improved after about 10,000 km and rapidly improved after about 15,000 km of use. That was about the time I shifted from 91 to 98 octane rated fuel which carries its own cleaners.
I cannot see it getting better than the current (at 25,000 km ) economy of about 12 Km/L or 8.5 L/100 Km.
On a good flat (ideal) cruise it uses markedly less than 8 L/100 Km but that gets blown on the averages.
If it starts to deteriorate from that I'll consider going 100% synthetic in order to try to hold the engines optimum wear/bedding at that point for as long as possible.
Part of that fuel economy improvement is my learning how to use the CVT transmission and part is due to the motor/gearbox spinning better as it is all run in.
Note: Short trips are hard on fuel economy.
Changing from 91 to 98 octane had a marked and lasting improvement on fuel economy.
A cold gearbox adds 10% to fuel consumption even after the engine has warmed up.
At a guess, even in my warm climate, I don't expect this car's parts to reach efficient operating temperature under anything less than 15 km of usual driving.
It's working well for me at the moment and I'll try to keep it at its optimum run in efficiency for as long as I can before it runs out.
Last edited by DogTrail, 25/Aug/2013, 11:48 pm
--- 2011/12 Australia:- 2.5 litre petrol 4WD, Series IV ST, CVT : + some gadgets and cosmetic add-on's. Dirt, (it protects the paintwork) X-2429(c).
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25/Aug/2013, 7:03 pm
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DogTrail
X-TRAIL FANATIC
Date Registered: 05-2012
Location: Sunshine Coast
TOTAL POSTS: 481
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Re: Re:
quote: I had my first 6 month service done with 5800 kms on the car and the dealer put castrol mineral oil in it, originally when i bought the car they told me they would be using semi synthetic oil but i guess they are assuming it would of had 10000 kms by then.
On first read, the above didn't ring any alarm bells. Re-reading it, I can hear the bells.
Some forums recommend mineral oil for the first 1,000 km to enhance the bedding/run-in process, then synthetic or semi -synthetic thereafter.
Not the other way around, as is suggested by your post.
Are you sure your Dealer switched from the recommended oil at the first service?
I was assuming that you were getting the same oil from your dealers warranty service as I do from mine, i.e. the Magnatec professional 10w30 - at least, that is what I'm paying for each time - according to the invoice.
That oil is a semi-synthetic with enhanced shear factors and is supposed to stick to cylinder walls to reduce start-up wear and is supposed to be the recommended Castrol oil for the model. (It is an easy Castrol Google).
There are cheaper Castrol oils (e.g. GTX 10w40 ) which are adequate but do not quite fit the preferred requirements of that motor.
What oil did they give you at the last service?
Last edited by DogTrail, 27/Aug/2013, 11:29 pm
--- 2011/12 Australia:- 2.5 litre petrol 4WD, Series IV ST, CVT : + some gadgets and cosmetic add-on's. Dirt, (it protects the paintwork) X-2429(c).
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27/Aug/2013, 11:02 pm
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mfeodoroff
X-TRAIL FANATIC
Date Registered: 09-2012
Location: Brisbane
TOTAL POSTS: 309
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Re: Re:
quote: DogTrail wrote:
I was assuming that you were getting the same oil from your dealers warranty service as I do from mine, i.e. the Magnatec professional 10w30 - at least, that is what I'm paying for each time - according to the invoice.
I've had services at different dealers. One has used Castrol (Magnatec) and another has used Valvoline (I can't remember which product off the top of my head).
I've heard that if you're switch from mineral to synthetic that the system should not just be drained, but flushed as well. Is this correct?
Cheers,
Mark
--- 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
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28/Aug/2013, 12:36 pm
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