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#1410648 - 03/21/09 08:20 PM What oil to use in 5.9L Cummins?
jc49 Offline


Registered: 03/20/09
Posts: 10
Loc: westchester county, ny
I have a 2006 dodge ram with the 5.9 cummins. I was using amsoil series 3000 5w-40 but had bad oil reports from blackstone. showing high iron wear and high calcium levels. they recomended to switch to shell rotella oil, and i have had better test results. I would like to run synthetic. I just was wondering what everyone is using in these trucks... thanks


Edited by jc49 (03/21/09 08:26 PM)

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#1410678 - 03/21/09 08:49 PM Re: What oil to use in 5.9L Cummins? [Re: jc49]
crazyoildude Offline


Registered: 07/23/08
Posts: 8844
Loc: New Jersey
Shell Rotella is a good oil a lot of truckers use it. We use that in some diesels that we rebuild..
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#1410754 - 03/21/09 10:19 PM Re: What oil to use in 5.9L Cummins? [Re: crazyoildude]
oilboy123 Offline


Registered: 12/05/03
Posts: 6918
Loc: Everett, Washington
You mean the HDD 5w-30? What about the AME 15w-40 Amsoil
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#1410942 - 03/22/09 07:09 AM Re: What oil to use in 5.9L Cummins? [Re: oilboy123]
Johnny Offline


Registered: 05/27/02
Posts: 14013
Loc: Retired | Wausau, WI
Synthetics: Rotella T Synthetic 5W-40, Mobil Delvac 1 5W-40, Amsoil AME 15W-40, and Schaeffer's 9000 Series 5W-40. These are some that come to mind, but I'm sure there are more.

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#1411028 - 03/22/09 09:20 AM Re: What oil to use in 5.9L Cummins? [Re: Johnny]
jmac Offline


Registered: 11/23/04
Posts: 1166
Loc: N. Texas
Valvoline Premium Blue Extreme 5w40, The Cummins oil! is another one.
For the summer you may consider going to one of the brands conventional 15w-40 as well, that engine will not likely notice the difference as indestructible as those tend to be.

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#1411081 - 03/22/09 10:16 AM Re: What oil to use in 5.9L Cummins? [Re: jc49]
D-Roc Offline


Registered: 11/23/05
Posts: 1526
Loc: quelque part
 Originally Posted By: jc49
I have a 2006 dodge ram with the 5.9 cummins. I was using amsoil series 3000 5w-40 but had bad oil reports from blackstone. showing high iron wear and high calcium levels. they recomended to switch to shell rotella oil, and i have had better test results. I would like to run synthetic. I just was wondering what everyone is using in these trucks... thanks


Any chance you could post the oil reports you mentioned as bad?

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#1411304 - 03/22/09 03:16 PM Re: What oil to use in 5.9L Cummins? [Re: D-Roc]
jc49 Offline


Registered: 03/20/09
Posts: 10
Loc: westchester county, ny
 Originally Posted By: D-Roc
 Originally Posted By: jc49
I have a 2006 dodge ram with the 5.9 cummins. I was using amsoil series 3000 5w-40 but had bad oil reports from blackstone. showing high iron wear and high calcium levels. they recomended to switch to shell rotella oil, and i have had better test results. I would like to run synthetic. I just was wondering what everyone is using in these trucks... thanks


Any chance you could post the oil reports you mentioned as bad?



not sure how to do it...??

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#1411440 - 03/22/09 06:14 PM Re: What oil to use in 5.9L Cummins? [Re: jc49]
trik396 Offline


Registered: 10/16/05
Posts: 107
Loc: USA
Delo, Schaeffers, Mobil 1, Valvoline... my Cummins likes them all.
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2005 DodgeRam2500 4x4 CumminsTurboDiesel
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#1411484 - 03/22/09 06:52 PM Re: What oil to use in 5.9L Cummins? [Re: jc49]
D-Roc Offline


Registered: 11/23/05
Posts: 1526
Loc: quelque part
 Originally Posted By: jc49
 Originally Posted By: D-Roc
 Originally Posted By: jc49
I have a 2006 dodge ram with the 5.9 cummins. I was using amsoil series 3000 5w-40 but had bad oil reports from blackstone. showing high iron wear and high calcium levels. they recomended to switch to shell rotella oil, and i have had better test results. I would like to run synthetic. I just was wondering what everyone is using in these trucks... thanks


Any chance you could post the oil reports you mentioned as bad?



not sure how to do it...??



Many here on the board, including myself just type the wear metals and other readings out as per the UOA
for example:
Fe 19
Al 2
Pb 1

and so on.

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#1411835 - 03/23/09 05:24 AM Re: What oil to use in 5.9L Cummins? [Re: D-Roc]
Bambam Offline


Registered: 12/16/03
Posts: 754
Loc: CT
I would love to see the report also.
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#1411845 - 03/23/09 05:53 AM Re: What oil to use in 5.9L Cummins? [Re: Bambam]
Steelhead Offline


Registered: 07/15/05
Posts: 876
Loc: Washington
usually, high wear iron in a CTD 5.9 is due to a poor performance air filter not removing the fine particle dirt, ie silicon.
can also be a leak in after filter tube to turbo intake.

will show high silicon also

hard to beat the stock CTD filter for cleaning the intake air and long engine/turbo life. if you've got money to burn, can't beat the Amsoil EAO air filter

sucking in dirt also destroys turbos. early stages of the blades going will show high aluminum from intake turbo impeller ending up in the oil
late stages end up with turbo blades in engine and rods out thru side of block


Edited by Steelhead (03/23/09 05:57 AM)

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#1412004 - 03/23/09 10:26 AM Re: What oil to use in 5.9L Cummins? [Re: Steelhead]
RWEST Offline


Registered: 10/25/07
Posts: 1373
Loc: Somerset County, PA
 Quote:
late stages end up with turbo blades in engine and rods out thru side of block

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#1412011 - 03/23/09 10:35 AM Re: What oil to use in 5.9L Cummins? [Re: RWEST]
jc49 Offline


Registered: 03/20/09
Posts: 10
Loc: westchester county, ny
I'm running the Banks Ram air filter, similar to the K&N style filter..

Here are the oil report findings from Blackstone:

JOHN: You switched to a different brand of oil, which shows up in the higher calcium additive. This Amsoil
was in use for 5,500 miles and engine wear increased above universal averages for the Cummins 6 BT.
Some diesels don't do well on synthetics, and yours may be one of them. But another reason for the wear
increase could be anti-freeze, if that's what potassium is. But we think it's more likely potassium is from the
EGR cooler and should improve next time. Change this oil, try going back to Rotella, monitor the coolant
level, and check back in 5K miles.

Diesel
Amsoil Series 3000 5W/30
0 qts
04/11/08
25,288 miles

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#1412013 - 03/23/09 10:43 AM Re: What oil to use in 5.9L Cummins? [Re: Bambam]
jc49 Offline


Registered: 03/20/09
Posts: 10
Loc: westchester county, ny
Cummins with 30,979miles

Alum 8 high
Chrom 2
iron 55 high
copper 7
lead 7
tin 0
moly 2
nickel 1
mang 1
silver 3
ti 0
potassium 47 high
boron 7
silicon 5
sodium 5
calcium 3213 hign
magnesium 11
phosphorus 1039
zink 1207
barium 1

this was amsoil ser 3000 5w-40. i now have rotella in with better results

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#1412197 - 03/23/09 01:54 PM Re: What oil to use in 5.9L Cummins? [Re: jc49]
1sttruck Offline


Registered: 03/20/04
Posts: 4378
Loc: Camas, WA
Isn't Amsoil 3000 a 5w30 ? Kind of thin.

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