Using Amsoil 15W40 Premium Heavy Duty Diesel Oil

brew1 · **Posted:** Sat Sep 22, 2007 3:50 pm

I'm considering using the Amsoil 15W40 HDD along with the Amsoil Oil Filter in a 2005 CRD with 30,000 miles on it and a soon to be disabled EGR. Cat and stock exhaust are still in place for now. This oil is readily available by the gallon from my local Farm & Fleet store.

I'd like to hear from members that are currently using it or have used it in their CRD and what thier experience has been. What type of extended drain intervals have you been seeing with oil analysis?

Thanks for your response,

Mark

BlackLibertyCRD · **Posted:** Sat Sep 22, 2007 4:57 pm

There is a sticky with oil analysis. You might want to check there at this link.

http://www.lostjeeps.com/forum/phpBB3/vie ... php?t=4582

TDI4BY · **Joined:** Sun Apr 02, 2006 11:56 pm **Posts:** 644

I don't think the 15w 40 would be so great no matter who makes it. Remember that from the factory 0w-40 or 5w-40 is required.

brew1 · **Posted:** Sat Sep 22, 2007 8:08 pm

TDI4BY wrote:

I don't think the 15w 40 would be so great no matter who makes it. Remember that from the factory 0w-40 or 5w-40 is required.

The EGR is also required from the factory and we all know how well that has worked out. LOL.

I'm interested in an oil that flows down to at least -10F and offers superior long term durability for engine components. Based on my research, the Amsoil 15W40 HDD product code (AME)should fit the bill, a close second I am considering is the Amsoil Series 3000 5W30 Heavy Duty Diesel Motor Oil Product code (HDD). If I was more concerned for fuel economy and needed oil that flowed to -60F, then I would probably go with the Series 3000 5W30 HDD.

UFO · **Posted:** Sat Sep 22, 2007 9:13 pm

The 0w or 5w will flow better at colder temperatures. And keep in mind the EGR is something added to control emissions. The oil specification for the engine is not something to mess with lightly.

brew1 · **Posted:** Sat Sep 22, 2007 9:31 pm

UFO wrote:

The 0w or 5w will flow better at colder temperatures. And keep in mind the EGR is something added to control emissions. The oil specification for the engine is not something to mess with lightly.

Temps around here in southern Wisconsin rarely get below 0 F so that is not an issue for me.

DarbyWalters · **Posted:** Sat Sep 22, 2007 10:00 pm

The Series 3000 5W-30 is not the best for the CRD (still great oil but not the 40W it needs)...my oil analysis was "ok" with it but the 15W-40 is better...AME 15W-40 Diesel/Marine. The Pour Point/Flash Point for the 15W-40 is -44F/453F and for the 5W-30 it is -50F/442F. Total Base Number (TBN) is 12.1/12.2. The TBN is to control any acidity that develops.

0311_DoC · **Posted:** Sat Sep 22, 2007 10:13 pm

I have had European Car Formula Synthetic 5W-40 Motor Oil (AFL) in my CRD going on about 9K so far, is this the wrong oil?

UFO · **Posted:** Sat Sep 22, 2007 10:46 pm

0311_DoC wrote:

I have had European Car Formula Synthetic 5W-40 Motor Oil (AFL) in my CRD going on about 9K so far, is this the wrong oil?

Does it have a CF rating? In other words, is it a motor oil for dieselsl?

brew1 · **Posted:** Sat Sep 22, 2007 11:17 pm

UFO wrote:

0311_DoC wrote:

I have had European Car Formula Synthetic 5W-40 Motor Oil (AFL) in my CRD going on about 9K so far, is this the wrong oil?

Does it have a CF rating? In other words, is it a motor oil for dieselsl?

Doesn't appear to be rated for diesels. I wouldn't consider running anything other than a CI-4+ rated diesel oil in my CRD.

DarbyWalters · **Posted:** Sat Sep 22, 2007 11:28 pm

It is rated for diesel cars and light trucks...but it has a lower TBN of 8 (that is still not a problem). It is basically a CJ rated oil that was developed for Diesels Engines that run Particulate Filters...we don't have that. The oil will still do just fine...and will match up at least as good as Mobil 1. It would need to be changed at regular intervals with the lower TBN IMO...just like the Mobil 1. It has been approved for VWs (Audi), Mercedes and BMW.

Meets the Dailmer Chrysler MS-10725 specs.

0311_DoC · **Posted:** Sat Sep 22, 2007 11:47 pm

DarbyWalters wrote:

It is rated for diesel cars and light trucks...but it has a lower TBN of 8 (that is still not a problem). It is basically a CJ rated oil that was developed for Diesels Engines that run Particulate Filters...we don't have that. The oil will still do just fine...and will match up at least as good as Mobil 1. It would need to be changed at regular intervals with the lower TBN IMO...just like the Mobil 1. It has been approved for VWs (Audi), Mercedes and BMW.

Meets the Dailmer Chrysler MS-10725 specs.

HMM thats odd cuz when i did a search on the Amsoil website, the Euro oil was what was recommended for the 2.8 engine... So I guess I should change it out soon then cuz its been in there a long time......

brew1 · **Posted:** Sun Sep 23, 2007 12:02 am

0311_DoC wrote:

DarbyWalters wrote:

It is rated for diesel cars and light trucks...but it has a lower TBN of 8 (that is still not a problem). It is basically a CJ rated oil that was developed for Diesels Engines that run Particulate Filters...we don't have that. The oil will still do just fine...and will match up at least as good as Mobil 1. It would need to be changed at regular intervals with the lower TBN IMO...just like the Mobil 1. It has been approved for VWs (Audi), Mercedes and BMW.

Meets the Dailmer Chrysler MS-10725 specs.

HMM thats odd cuz when i did a search on the Amsoil website, the Euro oil was what was recommended for the 2.8 engine... So I guess I should change it out soon then cuz its been in there a long time......

Quantify "long time"

0311_DoC · **Posted:** Sun Sep 23, 2007 12:15 am

brew1 wrote:

0311_DoC wrote:

DarbyWalters wrote:

It is rated for diesel cars and light trucks...but it has a lower TBN of 8 (that is still not a problem). It is basically a CJ rated oil that was developed for Diesels Engines that run Particulate Filters...we don't have that. The oil will still do just fine...and will match up at least as good as Mobil 1. It would need to be changed at regular intervals with the lower TBN IMO...just like the Mobil 1. It has been approved for VWs (Audi), Mercedes and BMW.

Meets the Dailmer Chrysler MS-10725 specs.

HMM thats odd cuz when i did a search on the Amsoil website, the Euro oil was what was recommended for the 2.8 engine... So I guess I should change it out soon then cuz its been in there a long time......

Quantify "long time"

LOL... well lets see, I have about 9K on the oil, I changed the oil in July of 06, and then I got deployed in October, I just got home. my wife drove it occasionally.....

brew1 · **Posted:** Sun Sep 23, 2007 12:42 am

0311_DoC wrote:

brew1 wrote:

0311_DoC wrote:

DarbyWalters wrote:

It is rated for diesel cars and light trucks...but it has a lower TBN of 8 (that is still not a problem). It is basically a CJ rated oil that was developed for Diesels Engines that run Particulate Filters...we don't have that. The oil will still do just fine...and will match up at least as good as Mobil 1. It would need to be changed at regular intervals with the lower TBN IMO...just like the Mobil 1. It has been approved for VWs (Audi), Mercedes and BMW.

Meets the Dailmer Chrysler MS-10725 specs.

HMM thats odd cuz when i did a search on the Amsoil website, the Euro oil was what was recommended for the 2.8 engine... So I guess I should change it out soon then cuz its been in there a long time......

Quantify "long time"

LOL... well lets see, I have about 9K on the oil, I changed the oil in July of 06, and then I got deployed in October, I just got home. my wife drove it occasionally.....

Welcome home and thanks for serving. Retired Air Force Reservist here.
The oil "could" still be good but you probably wouldn't want to run it much further without an oil analysis.

Cowpie1 · **Posted:** Sun Sep 23, 2007 1:28 am

The Amsoil AME 15w40 will flow quite nicely down to -40F. The Euro 5w40 is not a bad choice. It is rated for the CRD. The best choice if you are bound and determined to have the latest rating is the HDD 5w40 Amsoil. Rated CJ-4. It has a TBN of 8.

Now, that being said... The Amsoil AMO 10w40 is rated CI-4+ and has a TBN of >12 and flows well down to -40 also. It will fit the bill for the CRD real well. Since it isn't advertised as being Diesel rated, many overlook it as an option. Keep in mind the "0w" or "5w" is the winter rating and does not necessarily tell the whole story. Most off the shelf "synthetics" are actually hydrocracked mineral oils known as Class 3. Amsoil, Royal Purple, and some of the Mobil 1 line are class 4 PAO oils. A much better product that flows extremely well in cold temps. The "40" is the operating viscosity. Many of the Class 3 oils are low viscosity and use viscosity improvers to get the 40 rating. The Class 4 PAO oils are 40 weight out of the gate but have the ability to flow well at cold temps due to a more uniform molecular structure.

Your call what you want and are willing to pay for. I have used the Amsoil products throughout my CRD since the first oil change. I have never experienced even the slightest retardation in starting ability even in the coldest part of winter here. In the rare times I had the block heater on, it was on a timer for one hour only which didn't mean any warmth to the oil in the pan.

Unless you are putting on bypass filtration and looking for real long oil change intervals, You won't go wrong in using whichever PAO oil is the cheapest in price. Mobil 1 can usually be had at good price whomever has it on sale. Amsoil's price is pretty reasonable at the preferred customer or dealer price.

0311_DoC · **Posted:** Sun Sep 23, 2007 1:37 am

Ok, so since I really don't have a Winter problem here, what is the best Amsoil version to go with? or am I good staying with the Euro 5W-40? very confused now

brew1 · **Posted:** Sun Sep 23, 2007 1:53 am

My understanding of the CJ-4 rating is it is required because of newer vehicles emissions systems, which in our case is not needed and may in fact not protect a CRD as well as a CI-4+ oil will.

brew1 · **Posted:** Sun Sep 23, 2007 2:02 am

Perhaps a better question to ask may be, which of these Amsoil products will offer the CRD maximum engine protection for a 15,000 mile, oil change interval if used in conjunction with an Amsoil EA oil filter??

nescosmo · **Joined:** Sat Jul 14, 2007 11:17 pm **Posts:** 202

Rotella 5w-40, Mobil 5w-40 and Amsoil 15w-40. Down to earth are the same oil so if you have plenty of 15w-40 to use with your CRD do it , you will never notice any difference. And the engine will love it. The rest is bull#@$%$#.

Using Amsoil 15W40 Premium Heavy Duty Diesel Oil

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