what engine oil? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 33 (permalink) Old 04-30-2009, 02:04 AM Thread Starter
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what engine oil?

When I got this truck I found out the previous owner ran 15-40 mineral oil.
I have always ran synthetic in most of my vehicles and wanted to do the same with my truck.
I live in saint Louis but had two trips to Wyoming and one to Montana planed for the heart of the
winter with my new diesel truck [new to me].
The advice I got from the diesel locals in “cold country” was to run Turbo-Diesel Mobil 1 [5W-40W]
Well now summer is coming and I feel a bit nervous running 5W instead of 15W like the book says.
The oil pressure is not low in fact it is at the top of the range when I start up and will not drop
below the middle of the range at all.
I am starting to switch over my car's oil to Castrol Edge after reading some of THEIR charts that
show it protecting 8 times as well as Mobil 1.

The two oil's I am thinking about using[mostly because they are 15W SYNTHETIC.] are
Castrol Textron Extra 15W-40W or Royal Purple[turbo-diesel]15W-40W.

I am the kind of guy who likes to see charts and graphs more than opinion but as I have many
opinions myself', I still defiantly factor them into my decision and welcome them now.

I also know there is some Amsoil guys on the forum and although I Would like to hear what
they have to say; I Kind of like to keep it simple and just drive two miles away and pick my
oil up at the store instead of ordering it or going out of my way for it.

Dodge 2500 SB club-cab 6-speed Edge fass two-stroke 2”level kit posi rear end 2002
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post #2 of 33 (permalink) Old 04-30-2009, 03:03 AM
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Diesel Engine Oil - For this response, I am referring to the TDR Issue 57, Aug/Sept/Oct 2007.

P.S. There are lots of those charts and graphs in the article like you want to see.

Here is a list of the best 'regular' (non-synthetic) oils as per lab results:

BEST
1.) Cummins/Valvoline Premium Blue : 15W-40
2.) Pennzoil Long Life : 15W-40
3.) Chevron Delo 400 : 15W-40

GOOD
4.) NAPA Universal Fleet Plus : 15-W40
5.) Caterpillar DEO : 15W-40
6.) John Deere Plus-50 : 15W-40

SATISFACTORY
7.) Mobil Delvac 1300 Super : 15W-40
8.) Wal Mart Super Tech Universal : 15W-40
9.) Castrol GTX Diesel : 15W-40
10.) Motorcraft Super Duty : 15W-40
11.) Pilot Premium HD : 15W-40
12.) LiquiMoly Diesel Special : 15W-40

HO-HUM (least favorite)
13.) Rotella T Tripple Protection : 15W-40
14.) Castrol Tection : 15W-40
15.) Chevron Delo 400 LE : 15W-40

Now for Synthetics...

BEST
1.) Shell Rotella T Synthetic : 5W-40
2.) Cummins/Valvoline Premium Blue Synthetic : 5W-40
3.) Red Line Diesel Synthetic : 15W-40

GOOD
4.) Amsoil : 5W-40

SATISFACTORY
- - - - - - - - -

HO-HUM (least favorite)
5.) Amsoil Premium Synthetic : 5W-40

*Note that in the FINAL results, the Cummins/Valvoline Blue 15W-40 was the 'most liked' oil, synthetic or otherwise.

* I hope this helps in your oil choice. I personally have run many of these oils (none of the synthetics though..) and have been most impressed with the Cummins/Valvoline Blue 15W-40.

My truck wants to be a semi when it grows up...
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post #3 of 33 (permalink) Old 04-30-2009, 04:11 AM Thread Starter
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Quote:
Originally Posted by Jeffybuilt View Post
Diesel Engine Oil - For this response, I am referring to the TDR Issue 57, Aug/Sept/Oct 2007.

P.S. There are lots of those charts and graphs in the article like you want to see.

Here is a list of the best 'regular' (non-synthetic) oils as per lab results:

BEST
1.) Cummins/Valvoline Premium Blue : 15W-40
2.) Pennzoil Long Life : 15W-40
3.) Chevron Delo 400 : 15W-40

GOOD
4.) NAPA Universal Fleet Plus : 15-W40
5.) Caterpillar DEO : 15W-40
6.) John Deere Plus-50 : 15W-40

SATISFACTORY
7.) Mobil Delvac 1300 Super : 15W-40
8.) Wal Mart Super Tech Universal : 15W-40
9.) Castrol GTX Diesel : 15W-40
10.) Motorcraft Super Duty : 15W-40
11.) Pilot Premium HD : 15W-40
12.) LiquiMoly Diesel Special : 15W-40

HO-HUM (least favorite)
13.) Rotella T Tripple Protection : 15W-40
14.) Castrol Tection : 15W-40
15.) Chevron Delo 400 LE : 15W-40

Now for Synthetics...

BEST
1.) Shell Rotella T Synthetic : 5W-40
2.) Cummins/Valvoline Premium Blue Synthetic : 5W-40
3.) Red Line Diesel Synthetic : 15W-40

GOOD
4.) Amsoil : 5W-40

SATISFACTORY
- - - - - - - - -

HO-HUM (least favorite)
5.) Amsoil Premium Synthetic : 5W-40

*Note that in the FINAL results, the Cummins/Valvoline Blue 15W-40 was the 'most liked' oil, synthetic or otherwise.

* I hope this helps in your oil choice. I personally have run many of these oils (none of the synthetics though..) and have been most impressed with the Cummins/Valvoline Blue 15W-40.
Thank you for the info [that is what I am looking for]
Is that 3 TDR issues or just issue 57?
in any case I will get to work on getting access to those issues tomorrow.
Thanks again for the help.
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post #4 of 33 (permalink) Old 04-30-2009, 04:17 AM
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I don't know other than its Issue 57 for Aug/Sep/Oct 2007. If you would like, PM me with your info and I can fax the entire article to ya in the next day or 2, no problem.

My truck wants to be a semi when it grows up...
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post #5 of 33 (permalink) Old 04-30-2009, 04:21 AM
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Can't beat Amsoil, I know what the magazine says but what do the lab results say.
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post #6 of 33 (permalink) Old 04-30-2009, 04:23 AM
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The article was a direct result of laboratory testing...

My truck wants to be a semi when it grows up...
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Certified Transmission, Mishawaka, IN
http://www.certifiedtransmissiononline.com/home-6.html

State Line Diesel, Edwardsburg, MI
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post #7 of 33 (permalink) Old 04-30-2009, 04:43 AM
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Quote:
Originally Posted by Jeffybuilt View Post
The article was a direct result of laboratory testing...
paid for by whom? There has been a lot of so called lab reports out there that claim amsoil is terrible. But it's been run in my family for over 25 years with no issues. and it's in everything I own right down to the lawnmower.

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
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post #8 of 33 (permalink) Old 04-30-2009, 05:08 AM
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here are some links
https://www.amsoil.com/storefront/ame.aspx
https://www.amsoil.com/storefront/hdd.aspx
https://www.amsoil.com/lit/databulletins/g2607.pdf


I myself have had bad luck with royal purple.

for more info on diesel and car oil check out the amsoil website they have tons of info with tests etc.

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works

Last edited by 01quadcab; 04-30-2009 at 05:10 AM.
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post #9 of 33 (permalink) Old 04-30-2009, 05:10 AM
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I'm not saying one is better than the other. I don't know who paid for the testing, I don't know a lot of things...I just know that the TDR is a fairly legitimate source of information for our trucks, and I personally trust their writing.

I too have heard great things about Amsoil, and was surprised to see it in that ranking.

My truck wants to be a semi when it grows up...
Singles Club #247

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Thanks To:

Certified Transmission, Mishawaka, IN
http://www.certifiedtransmissiononline.com/home-6.html

State Line Diesel, Edwardsburg, MI
(269) 663-8571
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post #10 of 33 (permalink) Old 04-30-2009, 05:21 AM
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Quote:
Originally Posted by Jeffybuilt View Post
I'm not saying one is better than the other. I don't know who paid for the testing, I don't know a lot of things...I just know that the TDR is a fairly legitimate source of information for our trucks, and I personally trust their writing.

I too have heard great things about Amsoil, and was surprised to see it in that ranking.
yeah and a lot of times any publication is motivated by money.

01 quad cab 4x4, edge drag comp, 4" exhaust, fass 150, 250 ddps, Jefferson State compounds 683hp so vp 11.91. AMSOIL front to rear. now back to stock 95 fummins in the works
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