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#3422105 - 07/11/14 08:27 PM Delvac 1 SHC 5W40 Unimog 17.5kmi
m37charlie Offline


Registered: 06/08/09
Posts: 1148
Loc: Alaska
All numbers not listed are zero or 1
Fe 36
Cu 3
Al 5

Si 3
Na 18 (same as VOA)

Mg 51
Ca 4634
P 1399
Zn 1487
Mo 2
B 294

Vi 13.6
Fuel <1%
Soot 0.7

Water <0.05%

TAN 3.85
TBN 12.4

Makeup oil 6.5L in 29L sump
Analysis done by Detroit Diesel in Portland
I changed not because I thought it was used up but because it had been 2.5 years.
Clearly I can go for very long OCIs.

Charlie
_________________________
05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
01 BMW 325xi M1 0W40
52 Dodge M37/Hercules diesel
79 BJ40 Landcruiser

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#3422106 - 07/11/14 08:28 PM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: m37charlie]
dparm Offline


Registered: 04/19/10
Posts: 12612
Loc: Chicago, IL
Unimog eh? Can we see a pic of the beast?
_________________________
2011.5 BMW M3 saloon ZCP
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Castrol Edge Professional TWS 10w60 + Mahle OX 254D3

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#3422117 - 07/11/14 08:41 PM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: dparm]
m37charlie Offline


Registered: 06/08/09
Posts: 1148
Loc: Alaska
_________________________
05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
01 BMW 325xi M1 0W40
52 Dodge M37/Hercules diesel
79 BJ40 Landcruiser

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#3422151 - 07/11/14 09:18 PM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: m37charlie]
901Memphis Offline


Registered: 08/14/10
Posts: 6653
Loc: Northern Kentucky
I'd stretch it to 4 years and uoa for TAN. With that kind of make up oil you'll probably never run out of TBN.
_________________________
1999 Ford Taurus 146k (Vulcan v6) - M1 High Mileage 5w30 | Fram Ultra XG 3600
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#3422244 - 07/11/14 10:53 PM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: m37charlie]
Doug Hillary Offline


Registered: 05/30/03
Posts: 4909
Loc: Airlie Beach Australia
Hi Charlie,

a great UOA - yes, your OCIs could be extended too

My very kind regards - coming back to OZ anytime soon?
_________________________
Regards
Doug

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#3422247 - 07/11/14 10:57 PM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: m37charlie]
m37charlie Offline


Registered: 06/08/09
Posts: 1148
Loc: Alaska
Doug,

Not exactly soon but maybe after a generally eastwards trip through
Europe, Israel, Russia, Mongolia, China, SE Asia...
Shipping to and from Australia was more expensive than shipping to and from Europe by a factor of 10.

Charlie
_________________________
05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
01 BMW 325xi M1 0W40
52 Dodge M37/Hercules diesel
79 BJ40 Landcruiser

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#3422254 - 07/11/14 11:05 PM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: m37charlie]
Doug Hillary Offline


Registered: 05/30/03
Posts: 4909
Loc: Airlie Beach Australia
Hi Charlie,

I'm most envious - best wishes
_________________________
Regards
Doug

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#3422422 - 07/12/14 07:02 AM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: m37charlie]
dnewton3 Offline



Registered: 05/14/07
Posts: 5851
Loc: Indianapolis, IN
Originally Posted By: m37charlie
Clearly I can go for very long OCIs.

Charlie



I cannot agree with you any more than that!
Very low wear.
Very low contamination.
Excellent TBN/TAN relationship.
etc,etc ...


Extended OCIs are very much a reality here. 2.5 years and this is the result? Excellent example of how the clock is NOT a tool to change oil.

Obviously, Charlie is very-well versed in his application and will not extend without UOA confirmation along the way, but I see LONG OCIs if this is indicative of the performance.

This being the result, I would think even longer use would be something to consider.


Edited by dnewton3 (07/12/14 07:04 AM)
_________________________
Conventionals vs. Synthetics isn't about which is "better"; it's about which lasts longer, while assuring safe operation, in relation to cost. Any product can be over or under utilized. The same applies to filters.
Make an informed decision; first consider your operating conditions, next determine your maintenance plan, and then pick your lube and filter. Don't do it the other way around ...

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#3424214 - 07/14/14 09:33 AM Re: Delvac 1 SHC 5W40 Unimog 17.5kmi [Re: m37charlie]
m37charlie Offline


Registered: 06/08/09
Posts: 1148
Loc: Alaska
I think my plan will be to sample this new oil change at 20K and then every 7.5-10K thereafter. The limiting factors could be Fe (the limit on the engine is 200ppm) or viscosity, I doubt it will be TBN.

Charlie
_________________________
05 Unimog U500/Unicat camper/Delvac 1 SHC ACEA E4/E5
09 BMW X5 35d/Delvac1 LE 5W30
01 BMW 325xi M1 0W40
52 Dodge M37/Hercules diesel
79 BJ40 Landcruiser

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