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Dave4x4 Profile
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Date Registered: 08-2005
Location: NEWCASTLE
TOTAL POSTS: 690
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Re: T31 M9R diesel oil


Jeff,
To get you back on track isn't Syntec a Castrol oil could be wrong have been proven to be wrong once before, OK a maybe a few more times than I'm letting on

---
(Dave Newcastle 2004 ST
ID: X211

3/Jul/2009, 11:18 pm Link to this post Send Email PM   Send Private Message
 
Swagman Profile
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Date Registered: 05-2009
Location: Victoria, Australia
TOTAL POSTS: 16
Reply | QUOTE
Re: T31 M9R diesel oil


Ok, the promised follow-up...

Rang the Service Manager at my Nissan dealership when they opened on the Monday and had a good chat to him. Apparently the reason they hadn't put the Mobil1 ESP 5W-30 back in again is that Nissan have now changed their recommended grade for the M9R engine from 5W-30 to 5W-40. Their preferred oil was a "new" Castrol oil. However there was none available locally at the time, so their usual distributer sourced a drum of the Syntec Elite 5W-40 for them as a temporary replacement. Syntec Elite is a Royal Precision Lubricants (Moorabbin Vic) oil.

I reminded him that the DPF on the M9R engine needs a C3 low SAPS HTHS oil and he assured that it was, but that I could talk to his foreman who would check what was written on the drum if I was still concerned. The foreman couldn't find reference to the C3 rating on the drum. Both the foreman and the Service Manager mentioned that it was their distributor who had stated that the oil was C3 compliant - not something from the manufacturer/supplier.

So I gave Royal a call directly. Their tech guy was overseas, but when he returned he phoned me and I asked him the same questions. His answer? The Syntec Elite 5W-40 is for diesel engines BUT it is NOT a C3 compliant oil so is NOT suitable for use in diesel engines fitted with a DFP. He indicated that the Royal oil that should be used the the T31 Diesel Exy with DPF is Syntec C3 Full Synthetic 0W-30. He was happy to put all of this into an email to me.

Back to the dealership and showed the email to the Service Manager. He was VERY surprised (alarmed, actually), but immediately asked the foreman to drop the oil and replace it with the right oil (which had arrived since the original service) and replace the oil filter while I waited - Castrol Magnatec Professional C3 5W-40.

So all in all, an eventful couple of weeks.

The Service Manager tells me he is still waiting for a reply from the distributor, who apparently STILL believes the Syntec Elite is C3 compliant - and has supplied it under this belief to numerous other workshops for use in DPF diesels. Hmmmmm....

Incidentally, if there IS a general recommendation from Nissan to use the thicker 5W-40 rather than 5W-30, I would expect that other forum members with the M9R engine will have been told the same thing by their dealership? Has anyone else been told this? It would be nice to have what I've been told corroborated by others. The foreman I chatted to at my dealership says it's aimed at reducing the number of workshop DPF regenerations - thicker oil = reduced combustion of oil volatiles = reduced nasties reaching the DPF.

Jeff.
----------------------
2008 T31 diesel TS manual, Twilight, tow pack, roof bars, left cargo drawer, all round protection mouldings, boot mat, floor mats
4/Jul/2009, 5:30 pm Link to this post Send Email PM   Send Private Message
 
jalalski Profile
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Date Registered: 02-2004
Location: SUTHERLAND, SYDNEY
TOTAL POSTS: 29094
Reply | QUOTE
Re: T31 M9R diesel oil


Excellent information Jeff. Thanks for sharing it with us and am sure this will help many other diesel T31 owners.

---

4/Jul/2009, 6:01 pm Link to this post Send Private Message MSN Blog
 
Dave4x4 Profile
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Date Registered: 08-2005
Location: NEWCASTLE
TOTAL POSTS: 690
Reply | QUOTE
Re: T31 M9R diesel oil


Good follow up Jeff.

You did have vested interest for it to be the right oil emoticon

---
(Dave Newcastle 2004 ST
ID: X211

4/Jul/2009, 9:55 pm Link to this post Send Email PM   Send Private Message
 
dronus Profile
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Date Registered: 08-2008
Location: Adelaide
TOTAL POSTS: 541
Reply | QUOTE
Re: T31 M9R diesel oil


excellent follow up Jeff.

My last service document (20,000km on 23/04/09) says that the oil was

Nissan 7 / 5W30 oil

I still have not had an issue after switching to BP Ultimate too but will be interesting to see what oil will be used on my 30,000km service which isnt too far away.

---
Current - GU Patrol
Old - '08 T31 Platinum TL Diesel Manual - Bells and whistles.
Older - '04 T30 Ti-L Auto
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5/Jul/2009, 12:50 am Link to this post Send Email PM   Send Private Message MSN
 
cartsT31 Profile
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Date Registered: 09-2008
Location: Kings Park, NSW
TOTAL POSTS: 28
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Re: T31 M9R diesel oil


Hi Swagman,

Does the Castrol Magnatec Professional C3 have an HTHS rating? And what was the cost and availability like on it?

Cheers

---
2008 T31 TS Manual Turbo Diesel
"Bells and whistles"
26/Jul/2009, 5:22 pm Link to this post Send Email PM   Send Private Message
 
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Date Registered: 08-2008
Location: Adelaide
TOTAL POSTS: 541
Reply | QUOTE
Re: T31 M9R diesel oil


Looking through the service docket for my 30,000km service they have used this oil this time:

SLX PRO 5W/30 LOW ASH which cost $97.50.

I asked about it as it was a different name to my last service docket but they said its the right one. Kinda expensive, but if i dont have to worry about it, im not fussed emoticon

Also noticed they are using Castrol stickers for the service reminder, not sure if thats the same, but its a different style now.


---
Current - GU Patrol
Old - '08 T31 Platinum TL Diesel Manual - Bells and whistles.
Older - '04 T30 Ti-L Auto
X-966
26/Jul/2009, 5:42 pm Link to this post Send Email PM   Send Private Message MSN
 
Swagman Profile
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Date Registered: 05-2009
Location: Victoria, Australia
TOTAL POSTS: 16
Reply | QUOTE
Re: T31 M9R diesel oil


Hi Carts,

quote:

cartsT31 wrote:
Does the Castrol Magnatec Professional C3 have an HTHS rating? And what was the cost and availability like on it?



Ok, when I checked I found that the spec sheet link I provided in my earlier post doesn't specify a HTHS viscosity, so I phoned the Castrol Tech number this morning to ask....and learned lots.

I had been under the impression that HTHS was a rating concerning the "stability" of the oil at high temp (and that a THICKER viscosity was better here). Wrong! Apparently the HTHS rating is to do with "fuel economy" . They test the oil at 150 deg C to ensure that the oil has a LOW enough friction so that fuel economy claims by the manufacturer can be met. (Maybe this is common knowledge out there, but it was new info for me.)

The tech guy I spoke to tells me that Castrol Magnatec Professional C3 5W-40 is made from the same base as Castrol SLX Professional OE 5W-30, but the the '40' means it can't classify as a high fuel economy oil. (But as he said, it's better for engine protection if you are towing, doing lots of off-road grunty stuff or driving in a high temperature environment.)

His recommendations are use the SLX Professional OE 5W-30 if fuel economy is your main consideration, and the Magnatec Professional C3 5W-40 if protection under harsh conditions is your main consideration. But both oils meet the ACEA C3 Low SAPS requirement for the DPF and Catalytic EC setup on the Exy diesel.

As far as cost and availability is concerned, I can't help here Carts. When my dealer replaced the "wrong" oil, he didn't charge me so I don't have a price. I'll make some enquiries though and post again.

Cheers,

Jeff.

(Edit: typo)
----------------------
2008 T31 diesel TS manual, Twilight, tow pack, roof bars, left cargo drawer, all round protection mouldings, boot mat, floor mats

Last edited by Swagman, 27/Jul/2009, 10:42 am
27/Jul/2009, 10:35 am Link to this post Send Email PM   Send Private Message
 
dronus Profile
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Date Registered: 08-2008
Location: Adelaide
TOTAL POSTS: 541
Reply | QUOTE
Re: T31 M9R diesel oil


I'm interested how the oil can play a part in fuel economy. I can see how it can affect the protection of the engine. Is it something to do with internal friction?

---
Current - GU Patrol
Old - '08 T31 Platinum TL Diesel Manual - Bells and whistles.
Older - '04 T30 Ti-L Auto
X-966
27/Jul/2009, 12:26 pm Link to this post Send Email PM   Send Private Message MSN
 
Revhead Kev Profile
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Date Registered: 10-2006
Location: Mona Vale, Sydney, AUSTRALIA
TOTAL POSTS: 6115
Reply | QUOTE
Re: T31 M9R diesel oil


quote:

dronus wrote:
I'm interested how the oil can play a part in fuel economy. I can see how it can affect the protection of the engine. Is it something to do with internal friction?



As an example, let us consider a multi-grade oil with a viscosity of around SAE 10W/40. This describes an oil with a viscosity rating of 10 when cold and 40 once warmed to normal operating temperature (the higher the number, the thicker the oil). A common alternative for SAE 10W/40 oil is SAE 10W/30 – an oil that gives identical lubrication characteristics when cold but stays relatively thin once up to normal operating temperature. The SAE 10W/30 oil will reduce engine losses and improve fuel economy without compromising engine lubrication.

---
Kev X450(c) T30 Guru
03 Titanium Ti T30 Series 1 **MODIFIED**
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27/Jul/2009, 1:18 pm Link to this post Send Email PM   Send Private Message Blog
 


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