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#3196363 - 11/24/13 07:52 AM Re: T6 in my BMW?? [Re: Quattro Pete]
StuDawg Offline


Registered: 04/09/13
Posts: 32
Loc: South Carolina
Originally Posted By: Quattro Pete
Originally Posted By: StuDawg
I dont think the 0w40 is rated CJ4 for diesel or heavy duty is it?

Correct, it isn't. If CJ4 is a requirement, then yes, M1 0w-40 may not be the best fit. Although, I believe M1 0w-40 has a stronger add pack than T6. T6 add pack had to be reduced to be more friendly to DPF. Not sure if the OP's truck is DPF equipped...

Interestingly enough, in Europe, XOM sells a product called M1 0w-40 Turbo Diesel, and it's the exact same oil as the regular M1 0w-40.


Quote:
Where is 0w40 cheaper than $20-$21 a gallon?

Walmart. M1 0w-40 is $25 for 5qts. T6 is $21.50 for 4qts.


Thanks for that info...my 7.3 is definitely NOT DPF equipped, (pretty sure I wouldnt own a vehicle with that nonsense)....Are you saying I might be better off running the M1 0w40 across the board?
_________________________
2002 Ford Excursion Limited 4x4 7.3L PSD, Rotella T6 5w-40
2003 BMW 540iT M Sport, M1 0w40
1988 BMW 325i 4/5, T6!

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#3196477 - 11/24/13 09:32 AM Re: T6 in my BMW?? [Re: StuDawg]
Garak Offline


Registered: 12/05/09
Posts: 10996
Loc: Regina, Saskatchewan, Canada
You might be able to, assuming M1 0w-40 has the appropriate specification for your 7.3. Up here at least, it's CF rated.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Hastings LF113
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#3196779 - 11/24/13 04:03 PM Re: T6 in my BMW?? [Re: StuDawg]
Quattro Pete Offline


Registered: 10/30/02
Posts: 24852
Loc: Illinoistan
Originally Posted By: StuDawg
Are you saying I might be better off running the M1 0w40 across the board?

As Garak said, depends on what particular specs your Excursion calls for. What does the manual say?
_________________________
'02 530i (PU 5W-40)
'08 C300 4Matic (M1 0W-40)
'13 F700 GS (Spectro 15W-50)

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#3196946 - 11/24/13 06:54 PM Re: T6 in my BMW?? [Re: StuDawg]
StuDawg Offline


Registered: 04/09/13
Posts: 32
Loc: South Carolina
Looks like its CG-4/SH, as in, both. Manual says it has to meet both, not just one or the other. I think Im just gonna have to stick to T6 and M1 for the bimmers.
_________________________
2002 Ford Excursion Limited 4x4 7.3L PSD, Rotella T6 5w-40
2003 BMW 540iT M Sport, M1 0w40
1988 BMW 325i 4/5, T6!

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#3197148 - 11/24/13 10:08 PM Re: T6 in my BMW?? [Re: StuDawg]
Ducati996 Offline


Registered: 03/13/09
Posts: 75
Loc: Florida Ma.


Iíve pondered that question for a long time.
Iíve also read everything I could find on gasoline and diesel engine oils and Iíve come to this conclusion.
This is my opinion!

Diesel engine oils contain detergents to hold soot in suspension and neutralize acids until the oil can be replaced, detergents weaken the surface tension of the oil which can permit breaching of the fluid film and could allow metal to metal contact during extreme loads & temperatures if used in a gasoline engine.
Diesels engines have much larger bearing surfaces to carry the loads generated and typically turn much slower than gasoline engines (the older large diesels anyways)
Gasoline engines have much smaller bearing and thrust surfaces and also operate at higher speeds. This requires motor oil with very high surface tension (high film strength) to prevent failure of the fluid film separating the components.
I recently replaced the cam & lifters in my Dodge Cummins diesel and found this information.
To ensure a long service life a camshaft break-in additive such as ZDDP is needed and a specific operating procedure is required to ensure proper break-in of the cam/lifter interface during the first 30 minutes.
I also read that gasoline MOTOR oils may be better for this particular task.
Now in all honesty most drivers donít operate their vehicles at or near the threshold of the lubricants ability to maintain separation of bearing surfaces so itís unlikely that you or I would see the shortcomings of using quality diesel oil in a gasoline engine.
But if you have a highly tuned Hi-performance BMW you might want to stick with what BMW recommends.
My 2 cents!

Ducati996

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#3203943 - 12/02/13 01:24 PM Re: T6 in my BMW?? [Re: Ducati996]
StuDawg Offline


Registered: 04/09/13
Posts: 32
Loc: South Carolina
Thanks for that Ducati. My bimmers are both stock. I read somewhere that a Shell OEM technical advisor said that Rotella T would be fine for gas engines, the only issue would be the 15w-40 viscosity might be too thick for very cold temps, so then the T6 5w-40 would be preferable.
_________________________
2002 Ford Excursion Limited 4x4 7.3L PSD, Rotella T6 5w-40
2003 BMW 540iT M Sport, M1 0w40
1988 BMW 325i 4/5, T6!

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#3207000 - 12/05/13 08:04 AM Re: T6 in my BMW?? [Re: StuDawg]
ac_tc Offline


Registered: 05/06/08
Posts: 494
Loc: sweden
"Diesels engines have much larger bearing surfaces to carry the loads generated and typically turn much slower than gasoline engines (the older large diesels anyways)"

Well..yes and no, you have to look at surface speed not rpms
to do this comparison, the same hplds true for piston speed.
Their generally larger dimensions increases surface speed so
that they may be equal to a gas engine.
_________________________
-98 Dodge Durango 5.9 4*4 HDEO 10w- 40 ci4
-04 PT Cruser GT 10w- 40 HDEO ci4
-Everything else HDEO 10w- 40 ci4/STOU 10w-30/THF

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#3218820 - 12/16/13 06:03 PM Re: T6 in my BMW?? [Re: StuDawg]
Bandito440 Offline


Registered: 02/13/12
Posts: 1430
Loc: Northern NY
Of course you can use T6 in all of those vehicles. You could dial in specific oils for each vehicle with UOA and perhaps achieve 1ppm better wear or save a dollar in the process. But to me, the ease of using one oil for all vehicles makes things a lot easier and worth the extra dollar. While you're at it, put it in any outdoor power equipment, ATVs, or motorcycles that don't need something heavier.
_________________________
'13 Forester 2.5X 5MT - NAPA 0w-20 & Wix 57830
'97 R1100GS - RL 20w-50, KN-163, Shockproof Heavy

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