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OrioniS Profile
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Date Registered: 10-2011
Location: London
TOTAL POSTS: 14
Reply | QUOTE
Re: Best oil to use - synthetic or mineral ?


I thought that my 5w30 semi is good enough until I encountered vanishing oil every time I did a service on my car. I have it since it had 35K (70k now)and I must say we went through few oil changes as well as replaced tensioners, valves, gaskets... f***ng camshaft buckets for something like £45(~$60) a piece in UK (and they need x8)... So I thought that I may say something about oils and what I've found out...:

5w30 is recommended for "economy"... Fine with that, but it has 9k miles service interval and after about 6k, my oil start to disappear slowly but gradually. Ok, it was semi synthetic, but still. Engine noise become very apparent as well as tappets clatter, so I just knew that I need to change oil. After it was drained, it was really watery... Used Castrol GTX 5w30 semi and Edge 0w30 fully. Even, when it was new, it was kinda noisy.

Doing some research about oils, I went for Shell Helix HX7 10w40 just for trail and I'm shocked how much it can change the engine. It made my engine quiet, stronger and it doesn't drink oil like it used to. Still early to say, but it made a big difference.

During my research, I've noticed that alot of "fully synthetic" are actually blends of oils (including dino oil), but advertised as fully synthetics (it is rather "mostly" synthetic).
Our engine is kinda specific as it has massive blender inside (aka balancers) and high stroke what's promoting oval cylinders after so many miles and/or hard use. So, the problem with us is that we need rather shear resistant oil, whether is semi or fully synthetic it doesn really matter. I know, I'm going to get flamed for it, but with my experience of 0w30 fully and 5w30 semi oils from well known brands, I'm sure that 6k (and NOT 9k) oil change will be beneficial for QR25DE than actually paying for more expensive "fully synthetics" but less shear resilient brands and doing it after 9k. I can say that few people done actual oil shear tests and FS from known brands came out rock bottom... Why? Money, money, money...

Below is a link for few known brands shear oil test including Shell, Mobil 1, Castrol etc... What is apparent in those tests is that the really good shear resistant oils are actually something like xW40, xW50, xW60 (but not always) and most of 0w30,0w40 contains so many Viscosity Improvers (VI) that they render them useless for certain high shear applications. That's why VAG PD series engines are banned from 0w30 and 0w40 oils due to flat tappers (or something) - because they are NOT shear resistant and they know that.

Next oil change will after 5k and it will be Valvoline Durablend 10w40 as is now winter with 0C outside sometimes and my Exy does not have any trouble with start (of course I will let it run idle for 2-3 minutes before I set off, just as a precaution). Also, I may do used oil test to make sure, that it is actually working...

Also, 10w40 semi after few hundred miles will change to 10w30 more likely...


http://www.animegame.com/cars/Oil%20Tests.pdf

UPDATE:

Also, when you compare different oils with different weights then your results may not give you full picture. It make me laugh when they compare Subaru's AWD with others (and I still need to see one where it's compared to XTrail) but all of them on different tires and sizes. Come on...

So...

0w30, 5w30, 10w30...
0w40, 5w40, 10w40...

You will not find anything special, if everyone is comparing different manufacturers, on different weight and what's even worst different engines.

That's all and sorry for this monologue, but I had to chip in...


Last edited by OrioniS, 9/Mar/2014, 2:14 am


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Nissan X-Trail 2003 2.5 (QR25DE) SVE, LPG (e-GAS), more will come...
5/Mar/2014, 6:58 pm 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
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Re: Best oil to use - synthetic or mineral ?


Hi All,

I called the Castrol Tech guys on their hotline and provided them with some of my details on the Exy and climate conditions (living in Mt Isa with the first week of April having temps at 36 degrees still!).

I'm looking at putting Castrol Magnatec 5W40 into my 05/10 2.5L Petrol Exy as recommended by them.

I've asked my local Nissan dealer for my next service on Wednesday (23/4) to ensure they use this oil for the 30,000km service which will come at an additional cost of about $20-30 I was told. I'm also looking to but my own 20L drum and I can't find any locations in Brisbane that I can buy it from.

Can someone please help me chase down a supplier for this oil as I've made a number of calls today and google searches and have come up with squat :-(

Cheers,
Ben


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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
17/Apr/2014, 6:17 pm 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: Re:


quote:

jalalski wrote:

No worries, the 5W30 and 5W40 are almost identical anyway, the W40 is just a bit thicker oil and has a bit higher temperature tolerance. It's also available in the Castrol Edge range.



Hi Jalal,
 Well I'm glad the info from the Castrol guy supports your statement. In Winter our days still get up around the 20s while it rarely drops below zero up here.

Do you still support this oil type, or still swear by the 5W30?

Cheers,
Ben

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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
17/Apr/2014, 6:46 pm Link to this post Send Email PM   Send Private Message Blog
 
Charlie250 Profile
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Date Registered: 08-2012
TOTAL POSTS: 193
Reply | QUOTE
Re:




BP owns Castrol.

Reliance Petroleum are Qld distributors of BP products

Reliance Toowoomba direct ph number 07 4630 1777

Call them and they should be able to advise you of Brisbane outlet for the Magnatec Professioal 5W 40.

Also try calling Castrol Qld office on 07 3850 9300

Call me if you draw a blank.

Last edited by Charlie250, 17/Apr/2014, 11:08 pm


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X-2634 2012 Series IV TS Man, Kings Springs, Bridgestone D697's, High Tech Exhaust, Turbo Timer, DBA Slotted Rotors, QFM HPX Pads, Tow Bar, Cargo Barrier, UHF, HID Dr Lights, LED Light Bar, K&N Filter, Bonnet Struts, & Premium Tint
17/Apr/2014, 11:03 pm 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: Re:


quote:

Charlie250 wrote:
Reliance Toowoomba direct ph number 07 4630 1777

Call them and they should be able to advise you of Brisbane outlet for the Magnatec Professioal 5W 40.



I did track these guys down. Yes they did have some but unfortunately I won't be passing through their town during opening hours on either day of my return trip from Isa to Brisbane.

They gave me a number for another company I believe at Gatton, but again same issue. I don't believe they could supply me with a Brisbane contact, I'm unsure to their reason why. I think they (or another contact phone number through the website) tried to refer me to the website once more. Only for them to give me a number that would be my local supplier and a message bank at Cairns greeted me :-( not winning

quote:


Also try calling Castrol Qld office on 07 3850 9300

Call me if you draw a blank.



For some reason I didn't find this number even though I tried a few search variations (for Castrol and BP Reliance) and called a few local servos around the Eagle Farm area thinking they might know. On the Castrol website I used the "where to buy" link and it didn't show up.

Thanks Charlie for their number, hopefully if I can't resolve this on Saturday (doubt they're open) then I will arrange on Tuesday for a Saturday pick up if I can.

Much appreciated and I hope this helps others.
Charlie, do you know if you need to be a member (open an account with them - BP Reliance) in order to purchase the product? Or can you simply pay for it at the intended store?

Hopefully the Castrol Head Office can let me know emoticon

Regards,
Ben


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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
17/Apr/2014, 11:34 pm Link to this post Send Email PM   Send Private Message Blog
 
Twin mobile Profile
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Date Registered: 12-2013
Location: Mt Isa, QLD
TOTAL POSTS: 125
Reply | QUOTE
Re: Best oil to use - synthetic or mineral ?


So I had a look at my service history receipts today and found out that the 5,000km service done at the local Nissan dealer got Castrol Magnatec Proff. Though I'm unsure as to what grade it was.

I only found the 15 and 20,0000 service which was done at the same place and the description of the oil gave me the impression it was cheap and not fully synthetic.

I look forward to giving the poor girl some real engine oil that will keep her nice and healthy from now on at the 30,000km service on Wed.

Cheers for the comments everyone,
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
18/Apr/2014, 7:46 pm Link to this post Send Email PM   Send Private Message Blog
 


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