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#48 - 11/22/07 10:10 PM Cummins N14 - 35,000 miles on oil - 500,000 total
wwillson Offline

Administrator


Registered: 11/19/07
Posts: 125
Loc: Naperville, IL
Amsoil HDD 5w-30

 Code:
total miles	500,000
miles on oil	35,000

iron		45
chromium	13
lead		10
copper		33
tin		0
aluminum	3
nickel		0
silver		0
silicon		6
boron		2
sodium		0
magnesium	55
calcium		3602
barium		0
phosphorus	1171
zinc		1346
molybendum	9
titanium	0
vanadium	0
potassium	0

fuel		<1
vis@40		n/a
vis@100		13.18
water		0
soot/solid	5.3
coolant		no

tbn		6.40
oxid		n/a
nitr		n/a




Looks like the 5w-30 did pretty good!

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#57 - 11/23/07 12:13 AM Re: Cummins N14 - 35,000 miles on oil - 500,000 total [Re: wwillson]
Doug_Hillary Offline


Registered: 11/21/07
Posts: 54
Loc: Airlie Beach, Queensland, Aust...
Hi,
what are the application and operational details?

Single pass UOAs are difficult to comment on but to kick this off this is my initial reaction

Oil is past the condemnation point because of soot!
Soot limits typically are around 3%
The viscosity is beyond limits - see soot!
It is usually best to have the 40C viscosity test instead of the 100C vis in dealing with heavy diesel engines - or both

TBN is great!

Why is this engine running a 5w-30 lubricant and has the lubricant got Cummins Approval?. SAE30 lubricants typically fail the minimum HTHS vis of 3.7cSt required for most heavy diesel engine applications

More info please so we can learn more

Regards
Doug
_________________________
Doug Hillary
MY06 CLK Benz (M1 0w-40)
MY01 Porsche Boxster (Delvac 1 5w-40)

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#65 - 11/23/07 09:14 AM Re: Cummins N14 - 35,000 miles on oil - 500,000 total [Re: Doug_Hillary]
wwillson Offline

Administrator


Registered: 11/19/07
Posts: 125
Loc: Naperville, IL
From owner:

"Hello! This is my first oil analysis, it has a high soot level. My question is this... Is it possible that the high soot could have been from the vehicle sitting for a few days while it was serviced? I don't think the mechanic ran it to circulate the oil and warm up the motor (would the soot settle?). He used the drain to get the sample instead of a pump. Also, could the use of Amsoil be cleaning out the motor and contributing to the soot? I want to be able to go with extended intervals. I may have to add a bypass filter if soot levels stay the same after oil change.

This sample is from a 2000 Volvo VNL64T w/Cummins N14. Miles on oil at time were 24532, with 508485 on the tractor total. Oil is Amsoil's Series 2000 Heavy Duty Diesel 5w30. Filter is a Donaldson Extended Life (ELF) 7300. I bought the truck at 466k miles, and this was the first Amsoil to my knowledge. It was in a fleet before I bought it, so I am assuming Rotella or other standard fleet type oil was used prior."

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#67 - 11/23/07 12:43 PM Re: Cummins N14 - 35,000 miles on oil - 500,000 total [Re: wwillson]
onion Offline


Registered: 11/22/07
Posts: 20
Loc: Kansastan
This is the first time I've heard of running a 5w30 in a heavy truck engine. Not saying that it can't be done... but it's quite uncommon.

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#137 - 11/25/07 12:10 AM Re: Cummins N14 - 35,000 miles on oil - 500,000 total [Re: onion]
daytrader106 Offline


Registered: 11/23/07
Posts: 55
Loc: Summerfield, Illinois
Fuel in oil? I am not oil tech. I have never had fuel in my oil. It may be time to look at running the rack and having the valves adjusted.

Now, some say do not run the rack till you have a problem. I do it every 100k like clock work. Its cheap and worth it.

We just had to have head work in the truck that we had schedualed to have the rack ran. Just didn't make it. So we got to spend thousands to have some bent push robs replaced, a cam and run the rack.

The shop told me this could have been passed by if they were not so loose.
_________________________
Use good oil, NOT expensive additives.

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#147 - 11/25/07 07:40 AM Re: Cummins N14 - 35,000 miles on oil - 500,000 total [Re: daytrader106]
onion Offline


Registered: 11/22/07
Posts: 20
Loc: Kansastan
There aren't many engines on the road these days that have a "rack" to be adjusted. A few still around- some old Detroits and even a few Cats... but not many. There's no 'rack' in an N14.

In any case, this oil analysis shows that fuel dilution is less than 1%, which is very good for an N14. N14 injectors are notoriously leaky- so much so that these engines have a reputation for never using a drop of oil... mostly because they refill themselves. Cummins came out with a service bulletin years ago saying that up to 5% fuel dilution at the end of an oil change was acceptable. Don't know if this has changed since... but it was current as of 2000.

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#507 - 09/23/12 07:31 PM Re: Cummins N14 - 35,000 miles on oil - 500,000 total [Re: wwillson]
Copperhead Offline


Registered: 01/24/08
Posts: 35
Loc: Iowa
Running a bypass or centrifuge unit on that engine would eliminate most of the soot buildup. That would make the sample come out a lot better over the same time period. Some of the soot showing up and wear metals what they are could be a "cleaning up" of the engine if that synthetic was recently introduced to the engine.

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