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#4580722 - 11/21/17 06:35 AM Mobil Delvac 5w40 - 10 Yr Engine Tear Down
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
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#4580732 - 11/21/17 06:52 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
Cujet Offline


Registered: 02/15/03
Posts: 7150
Loc: Jupiter, Florida
It's fantastic oil, and works incredibly well in gas engines also.


Edited by Cujet (11/21/17 06:57 AM)
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#4580735 - 11/21/17 06:59 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
Mobil does have great products. grin2
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#4580780 - 11/21/17 07:56 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
64bawagon Offline


Registered: 01/10/17
Posts: 167
Loc: Michigan
Note the Baldwin filters also.
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#4580828 - 11/21/17 08:58 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
PiperOne Offline


Registered: 10/25/17
Posts: 184
Loc: A Highway Near You
Great video! It's amazing how far oils and engines have come. I can remember when doing bearing rolls in truck engines was common after 250,000 miles...and 10,000 hrs was considered "good" life from an off road engine. Only ever had experience with one KTA-38 Cummins...in a standby gen-set. Oil samples were awful but it's a tough life going from engine off to engine full rpm full load in less than a second.
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#4580845 - 11/21/17 09:19 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
dblshock Offline


Registered: 04/24/07
Posts: 2655
Loc: WI.
probably similar to 15k mi. OCI's by my calc....this formula has changed recently to the CK designation.
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#4580882 - 11/21/17 10:08 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
bullwinkle Offline


Registered: 10/09/04
Posts: 7665
Loc: Cincinnati, OH, USA
That's what I run in my Cummins Ram in my sig. Combined with Fleetguard Venturi Stratapore filters, I'm sure the engine will easily outlive me, and the Dodge truck it's installed in!
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#4580891 - 11/21/17 10:26 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: dblshock]
Bighorn2500 Offline


Registered: 05/24/16
Posts: 313
Loc: Michigan, USA
Originally Posted By: dblshock
probably similar to 15k mi. OCI's by my calc....this formula has changed recently to the CK designation.


Would like to see the what the CK-4 version VOA looks like, running out of my CJ-4 stash.
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#4580895 - 11/21/17 10:29 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
ESP?!?!?!?!

That's for emissions system protection - Low SAPS, correct?
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#4580896 - 11/21/17 10:29 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
Scdevon Offline


Registered: 09/07/09
Posts: 325
Loc: Rockies
"Balanced additive formulation".
No doubt there is a VOA somewhere on this oil and I'm sure it has a healthy additive package. Probably has roller cam followers although all you could see in the video were roller rockers. Not to take anything away from the oil, but this engine rarely gets cold started I'm guessing in a commercial marine environment and probably lives most of its life at stable operating temps. This is a huge difference from running errands in a diesel pickup truck or even normal civilian driving in a diesel pickup.

Marine environments are also dust and dirt free by nature. Shouldn't make a difference with proper air filtering, but in the real world, some dirt always seems to get past the filter in, say, a construction or mining environment vs a marine installation. Great teardown, though and it was totally unnecessary on this engine other than to have a "peek" inside.
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#4580897 - 11/21/17 10:31 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: PiperOne]
Linctex Offline


Registered: 12/31/16
Posts: 6148
Loc: Waco, TX
Originally Posted By: PiperOne
...and 10,000 hrs was considered "good" life from an off road engine. Only ever had experience with one KTA-38 Cummins...in a standby gen-set.


I know of a Kubota D905 spinning a Marathon 6KW head 24/7/365 at a remote signals outpost for the DOD.

23,000 hours last time I saw it - never been apart.
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(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."

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#4580919 - 11/21/17 10:52 AM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: PiperOne]
StevieC Offline


Registered: 08/21/08
Posts: 17116
Loc: Ontario, Canada
Originally Posted By: PiperOne
Great video! It's amazing how far oils and engines have come. I can remember when doing bearing rolls in truck engines was common after 250,000 miles...and 10,000 hrs was considered "good" life from an off road engine. Only ever had experience with one KTA-38 Cummins...in a standby gen-set. Oil samples were awful but it's a tough life going from engine off to engine full rpm full load in less than a second.


My dad used to do Journal bearings on the regular in the late 1960' / early 1970's. Oh and don't forget valve jobs every 60,000. grin2
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'15 Dodge Journey - 90,000 KM's - SSO 5w20
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#4581064 - 11/21/17 01:35 PM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
Jeffs2006EvoIX Offline


Registered: 02/28/10
Posts: 1623
Loc: Imperial Valley, California
This may sound stupid, but if the engine was in such great shape....what was the purpose of the rebuild? Im kinda confused there. Are these mandated by someone?

Just curious.


Jeff
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#4581155 - 11/21/17 03:41 PM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: Jeffs2006EvoIX]
Scdevon Offline


Registered: 09/07/09
Posts: 325
Loc: Rockies
Originally Posted By: Jeffs2006EvoIX
This may sound stupid, but if the engine was in such great shape....what was the purpose of the rebuild? Im kinda confused there. Are these mandated by someone?

Jeff


Hard to say for sure, but this seems more like an infomercial for Mobil and I'm sure they have a certain amount of money in their R&D and advertising budgets for some sponsored real world field testing like this. They went out of their way to say that the initial fill in this engine was Delvac plus all other oil changes. If the results of the teardown were less than spectacular, they'd be under no obligation to show the public.

There's no agency in the U.S. that mandates periodic overhauls and inspection of commercial marine engines that I know of. This engine is obviously out of a river tug.
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2003 Mustang Mach 1. 32V 4.6 Liter. Motorcraft Syn Blend 5W30
1970 Mustang Convertible 302-2V Auto (Stock) M/C 10W30
1970 VW Beetle 1600 DP

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#4581221 - 11/21/17 05:16 PM Re: Mobil Delvac 5w40 - 10 Yr Engine Tear Down [Re: StevieC]
OVERKILL Offline


Registered: 04/28/08
Posts: 36441
Loc: Ontario, Canada
Reminds me of Doug Hillary's experience with Delvac 1 and his million Km tear-down results posted on here some time back.
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