any one use 15w40 in your 2.8L?

tjkj2002 · **Posted:** Sun Nov 29, 2009 8:51 pm

yakers wrote:

One problem with dino oils is that they do not last as long. If I used a dino oil I would probably change it @3Kmi. So the cost works out about the same for synthetic @ 6K mi and thats not counting those folks who go 12.5K mi between changes (Does anyone do that?)

Dino 15w-40 diesel oil is speced for 5000-7500mile oil changes in other diesel apps.

mikey1273 · **Posted:** Mon Nov 30, 2009 12:34 am

I use the Shell 5W40 synthetitic in mine don't know what the dealer put in for the first owner. I plan to run it untill the thing says its time for service when 6250 miles are up.

I'd be too chicken to try any weight or type of oil the manual did not recomend even if I had it on hand. I would give that stuff away or sell it on Craigslist.

I had a few quarts of Pensoil 10w30 and some fuel ingector cleaners that I used in the Subaru before I traded it off for the Jeep, I gave all that stuff I had no use for to my tenant to use in his car. someone will be happy to have that stuff one way or another.

nursecosmo · **Posted:** Mon Nov 30, 2009 4:10 am

mikey1273 wrote:

I use the Shell 5W40 synthetitic in mine don't know what the dealer put in for the first owner. I plan to run it untill the thing says its time for service when 6250 miles are up.

I'd be too chicken to try any weight or type of oil the manual did not recomend even if I had it on hand. I would give that stuff away or sell it on Craigslist.

I had a few quarts of Pensoil 10w30 and some fuel ingector cleaners that I used in the Subaru before I traded it off for the Jeep, I gave all that stuff I had no use for to my tenant to use in his car. someone will be happy to have that stuff one way or another.

Unlike some autos, the Jeep won't anounce when it is time to change the oil. You'll have to keep an eye on the odometer.

mikey1273 · **Posted:** Mon Nov 30, 2009 8:54 am

nursecosmo wrote:

mikey1273 wrote:

I use the Shell 5W40 synthetitic in mine don't know what the dealer put in for the first owner. I plan to run it untill the thing says its time for service when 6250 miles are up.

I'd be too chicken to try any weight or type of oil the manual did not recomend even if I had it on hand. I would give that stuff away or sell it on Craigslist.

I had a few quarts of Pensoil 10w30 and some fuel ingector cleaners that I used in the Subaru before I traded it off for the Jeep, I gave all that stuff I had no use for to my tenant to use in his car. someone will be happy to have that stuff one way or another.

Unlike some autos, the Jeep won't anounce when it is time to change the oil. You'll have to keep an eye on the odometer.

My limited has The computer in the over head consol. it will count down the miles to the next service interval that you select form a number of choices.

nursecosmo · **Posted:** Mon Nov 30, 2009 11:20 am

I'll be darned.

linewarbr · **Posted:** Mon Nov 30, 2009 12:21 pm

mikey1273 wrote:

nursecosmo wrote:

mikey1273 wrote:

I use the Shell 5W40 synthetitic in mine don't know what the dealer put in for the first owner. I plan to run it untill the thing says its time for service when 6250 miles are up.

I'd be too chicken to try any weight or type of oil the manual did not recomend even if I had it on hand. I would give that stuff away or sell it on Craigslist.

I had a few quarts of Pensoil 10w30 and some fuel ingector cleaners that I used in the Subaru before I traded it off for the Jeep, I gave all that stuff I had no use for to my tenant to use in his car. someone will be happy to have that stuff one way or another.

Unlike some autos, the Jeep won't anounce when it is time to change the oil. You'll have to keep an eye on the odometer.

My limited has The computer in the over head consol. it will count down the miles to the next service interval that you select form a number of choices.

x2. And you can set it for different intervals, 3k, 6250, and the longest being 12,500.

tcoilburner · **Posted:** Mon Nov 30, 2009 1:47 pm

Our Jeep Liberty CRDs (2005-2006) require a CI 4+ (API) but of course can accept a CJ 4 (2007+). The CJ 4 is usually a DEO or DME...but I prefer the Amsoil AME (CI 4+) 15W-40 Heavy Duty Diesel and Marine Applications. If I lived in a colder climate, I would have to adjust it for the season change.[/quote]

doesn't the manual call for cf rated oil in the 05 - 06 crd? prefered at a 0w40 wieght. :?:

Tinman · **Joined:** Mon Apr 10, 2006 10:45 am **Posts:** 308

So ambient operating temps aside, there is no reason to not use dino 15-40 because VM specs this in other applications? I assume this means the engines tolerances aren't too tight to allow a "thicker" oil to lubricate. Which means here in the south east it should do nicely.

mikey1273 · **Posted:** Mon Nov 30, 2009 5:50 pm

Tinman wrote:

So ambient operating temps aside, there is no reason to not use dino 15-40 because VM specs this in other applications? I assume this means the engines tolerances aren't too tight to allow a "thicker" oil to lubricate. Which means here in the south east it should do nicely.

If what you are saying is true then yeah I guess you could use Dino 15w40 in the southern states, but you would need to change it more often. like 3000 - 5000 miles not the 6000- to 12,000 you can get with a synthethic oil. The lighter oil also helps give better feul economy too.

I have never been able to find 0w40 Mobile one in local stores, can anyone else just walking to a store and buy it?

Big Montana · **Posted:** Mon Nov 30, 2009 6:40 pm

I've only ever bought 0W 40 in Michigan. It's about $7 a quart.

mikey1273 · **Posted:** Mon Nov 30, 2009 7:10 pm

Big Montana wrote:

I've only ever bought 0W 40 in Michigan. It's about $7 a quart.

same as mobile 1 is here in 5w40 then. I can buy shell Rotella synthetic for 5.77 a quart or now 19.50 a gallon at wally world. used to be $19 a gallon.

tjkj2002 · **Posted:** Mon Nov 30, 2009 7:57 pm

mikey1273 wrote:

Tinman wrote:

So ambient operating temps aside, there is no reason to not use dino 15-40 because VM specs this in other applications? I assume this means the engines tolerances aren't too tight to allow a "thicker" oil to lubricate. Which means here in the south east it should do nicely.

If what you are saying is true then yeah I guess you could use Dino 15w40 in the southern states, but you would need to change it more often. like 3000 - 5000 miles not the 6000- to 12,000 you can get with a synthethic oil. The lighter oil also helps give better feul economy too.

I have never been able to find 0w40 Mobile one in local stores, can anyone else just walking to a store and buy it?

At operating temps is does not matter if you use 15w-40,5w-40,or 0w-40 since at operating temps they all will be at 40 weight viscosity.The only advantage of the 5w/0w over the 15w is for start ability in colder temps.So as long as you live in a place that never gets below 32 degrees 15W-40 is a great choice for your 2.8,cheaper and easier to find also.The reason for the 5w/0w speced oil for the 2.8 is from multiple starts/stops that it will see compared to most of the bigger diesels that seldom get turned off,a wear issue but if you do alot of highway driving there will be no difference between the 5w/0w compared to the 15w oils.

discotdi · **Posted:** Tue Dec 01, 2009 12:49 am

I won a case of Napa 5W 30 Synthetic at a charity raffle is it ok to use it in an 05 2.8? I live down south so rarely colder than 20F. I have been using the Mobil1.

SLS · **Posted:** Tue Dec 01, 2009 3:18 am

Yes, AMSOIL makes several 15W-40 Diesel Oils

The premium choice Premium API CJ-4 Synthetic diesel oil for model-year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission-quality oil standards.

SAE 15W-40 Heavy-Duty Diesel and Marine Motor Oil - The premium choice diesel oil for model-year 2007 and newer heavy-duty and pickup truck diesel engines requiring API CJ-4 emission-quality oil standards.

I use the one recommended for Jeep CRD by AMSOIL a 100% Synthetic 5W-40 European Engine Oil.
AMSOIL European Car Formula Synthetic 5W-40 Motor Oil (AFL) is specially formulated for the lubrication needs of modern European gasoline and diesel cars and light trucks. Formulated with advanced AMSOIL synthetic base stocks, premium additives and a 5W-40 viscosity rating, AMSOIL AFL is the preferred oil for virtually all European automobiles, especially turbo-charged models. It is one of the only oils in North America to be recommended for the latest specifications of all three major European automakers - Volkswagen (Audi), BMW and Mercedes-Benz - and the latest North American API specification. AMSOIL European Car Formula is highly versatile for multiple applications and performs well in the cold up state NY winter weather.

Service Life
Recommended for the extended drain intervals established by the vehicle manufacturer or extend based on oil analysis. I changed the oil filter at time of oil change at 25,000 miles. I used the AMSOIL Absolute Efficiency Oil Filter number EAO34.
You can use the "product lookup guide for Auto and Light Trucks to looke up your Jeep at: http://www.lubedealer.com/ve

Tinman · **Joined:** Mon Apr 10, 2006 10:45 am **Posts:** 308

Well, I had some Cat DEO SYN 5W-40 CI-4+ on order at a large Cat place. It was canceled b/o apparently you can only get that oil in Mexico now. So I guess it is either CJ-4 5W or 15W. I am really considering using dino 15-40. The only thing mentioned in this post has got me thinking is that winter temps do get into the teens a few days a year. But we usually plug up below freezing. I have run 15-40 in my trucks for years with good result event though it has cranked many times below 20 degrees.6

UFO · **Posted:** Tue Dec 01, 2009 4:27 pm

BBB wrote:

Here on the eastern seaboard we run 15w-40 dino year round in ALL of our diesels.

- Makes it easy to have one oil for multiple rides.
- Buying it in 5 gallon buckets does save you a few quarters.

Temps rarely drop below 17 F here in the Philly area and we always plug in below 40 F. Don't know if the VM engine warranty is dependent on proof of spec'd oil use. We're past that point anyway. If your concerned and you live where you can freeze your tongue to the flagpole daily

just save the 15W-40 for the summer.

I would perform an oil analysis on your dino oil in the CRD, after a few thousand miles and see if it's still performing. You might find your wear metals excessive, meaning your CRD will not last. There is a reason synthetic is specified for the engine.

SLS · **Posted:** Thu Dec 03, 2009 12:31 am

The superior quality of AMSOIL synthetic motor oils provides the ultimate in protection and performance in your CRD. With extended drain capabilities provide another significant cost effective benefit.
While a 3,000-mile oil change is initially less expensive than an AMSOIL oil change, the extended 25,000 mi. or more drain capabilities of AMSOIL synthetic motor oils save customers more money in the long run not to mention extending the life of your diesel engine. Noting there are only about 11,000 Jeep CRDs in the US I would rather dump my bargain oil in something I could find a cheap replacement for. :idea:

tjkj2002 · **Posted:** Thu Dec 03, 2009 12:38 am

SLS wrote:

The superior quality of AMSOIL synthetic motor oils provides the ultimate in protection and performance in your CRD. With extended drain capabilities provide another significant cost effective benefit.
While a 3,000-mile oil change is initially less expensive than an AMSOIL oil change, the extended 25,000 mi. drain capabilities of AMSOIL synthetic motor oils save customers more money in the long run not to mention extending the life of your diesel engine. Noting there are only about 11,000 Jeep CRDs in the US I would rather dump my bargain oil in something I could find a cheap replacement for. :idea:

Yeah you'd want a UOA before you venture beyond the recommended factory change interval to make sure the oil and filter are still good,and keep on doing them at at least 1000miles intervals to make sure the oil/filter are still good otherwise your just "wasting money".

SLS · **Posted:** Thu Dec 03, 2009 12:59 am

Oil analysis can help reduce lubricant and disposal costs extending oil drain intervals translates into less environmental pollution and less dependency on foreign oil. In some instances it may be necessary to change the filter only and top off the oil level. In other instances it will tell you to change both the oil and filter at the same time.

tjkj2002 · **Posted:** Thu Dec 03, 2009 1:04 am

SLS wrote:

Oil analysis can help reduce lubricant and disposal costs extending oil drain intervals translates into less environmental pollution and less dependency on foreign oil. In some instances it may be necessary to change the filter only and top off the oil level. In other instances it will tell you to change both the oil and filter at the same time.

And is necessary when exceeding factory oil change intervals otherwise you are doing nothing but harm to your engine.

But with the cost of a UOA,even with multiple UOA's if you plan on going over 12,000miles on the oil(if the results come back good) you are spending up to 3x's the cost,if not more,if you had just changed your oil at the specified factory change intervals with good quality oil.

any one use 15w40 in your 2.8L?

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