Oil Type??????????

[LBARTLETT]

I recently purchased a 04. 5 1 ton 4X4 automatic. I had alway ran Rotella in my previous Cummins. I was told by the dealership that they were using Mobil One oil now. The 1st oil change I put in Mobil One 10-30. Was this the right thing to do? Should I go back to Rotella 15-40? Thanks for your input.

 

[SGBARRACUDA]

I use to use Rottela, But if you look for the oil specification that your truck takes (CI-4) Rottela doesn't show it! I use Kendal super D-3 15-40.

 

[Jengle]

Not sure if the 10w-30 is diesel rated or not. I have used Mobil Delvac 1300 super in mine, since first oil change. Get it cheap at Walmart or Costco. As long as it's diesel rated, whatever brand is fine, it comes down to personal choice.

 

[Vaughn MacKenzie]

I was told by the dealership that they were using Mobil One oil now. The 1st oil change I put in Mobil One 10-30. Was this the right thing to do?

I think the guys at your dealer are idiots. I seriously doubt Cummins switched to Mobil for factory fill. I'ms sure they've got it confused with the Hemi (which may come with Mobil 1 factory fill).



Go back to the Delo 400 or Rotella, I am pretty sure the Mobil 1 10-30 is NOT diesel rated (check on the bottle and see if it says CI on the API symbol).



If you want to go synthetic do Amsoil HD diesel & marine oil, Mobil Delvac 1, Valvoline Premium Blue extreme or Rotella Synthetic (what I am using in my '96).



Vaughn

 

[GWoody]

Most folks don't recommend using synthetic till after the engine has broken in well.

 

[RustyJC]

If, after breakin, you choose to use a Mobil synthetic, the correct product for the Cummins is Mobil Delvac 1, also reportedly available as Mobil Truck and SUV (I think) synthetic. Mobil 1 is primarily formulated for gasoline engines.



Rusty

 

[txhawg]

I recently purchased a 04. 5 1 ton 4X4 automatic. I had alway ran Rotella in my previous Cummins. I was told by the dealership that they were using Mobil One oil now. The 1st oil change I put in Mobil One 10-30. Was this the right thing to do? Should I go back to Rotella 15-40? Thanks for your input.

The manual states NOT to use synthetic oil in the first 20,000 miles. You need to find a new dealer for service.

 

[Caveman]

I have 15K on my 04. 5 now. I was using Delo400. I switched to a non-synthetic long drain oil from Lubrication Engineers. I'm waiting for my next change to send in a sample for testing. Synthetic oil has a tendency to brake down if you don't run the engine everyday. When that happens the additives separate and the oil doesn't perform as it should. The additives will not mix back in until the oil gets to normal operating temperature. This is bad for drivers who let their truck sit a lot and only drive short distances. My truck doesn't have this problem with 15K after 6 months.



http://www.le-inc.com

 

[GCecchetto]

I was told by the dealership that they were using Mobil One oil now.

Your dealer is a stooge! You should not run a synthetic oil until the motor is fully broken in which can be a long time if you are like me and don't tow with the truck. The factory fill is Valvoline Premium Blue, you'll know after you do an oil change because the rank oder will be very strong again at idle from the breather tube. If you read the label on the side of the bottle it says "developed in cooperation with Cummins" and has the Cummins logo right on it. It also talks about being specially formulated for the new high soot diesel engines. This is an important piece of info. Plenty of us have been shocked by how fast these engines turn the oil black. That's soot and lots of it. You can talk oil testing all day long but if your oil is black its got plenty of soot in it. Maybe Cummins isn't using no gap rings anymore, I don't know. Maybe it's the fact that these trucks run 30+pounds of boost stock vs 15-17 for the old 12 valve motors (if I remember correctly) that ran the oil so clean. In any event Cummins knows there is a soot issue with the newer motors and they developed an oil with Valvoline to deal with it. I plan on using it untill she's broken in and I can switch over to Amsoil. I get it at Pep Boys for $7. 50 a Gallon.



Gino

 

[amsoilman]

I have 15K on my 04. 5 now. I was using Delo400. I switched to a non-synthetic long drain oil from Lubrication Engineers. I'm waiting for my next change to send in a sample for testing. Synthetic oil has a tendency to brake down if you don't run the engine everyday. When that happens the additives separate and the oil doesn't perform as it should. The additives will not mix back in until the oil gets to normal operating temperature. This is bad for drivers who let their truck sit a lot and only drive short distances. My truck doesn't have this problem with 15K after 6 months. /QUOTE]



I do not know where you came up with "Synthetic oil has a tendency to brake down if you don't run the engine everyday. "!When that happens the additives separate and the oil doesn't perform as it should. The additives will not mix back in until the oil gets to normal operating temperature.



Anyone with any kind of knowledge concerning oils, will tell you quite the opposite! Synthetic oils, especially PAO based synthetics, do not break down nearly as fast as a petrolium based oil!



Do some research, and I think you will not make that kind of statement!

 

[LHallmark]

I do not know where you came up with "Synthetic oil has a tendency to brake down if you don't run the engine everyday. "!When that happens the additives separate and the oil doesn't perform as it should. The additives will not mix back in until the oil gets to normal operating temperature.



Anyone with any kind of knowledge concerning oils, will tell you quite the opposite! Synthetic oils, especially PAO based synthetics, do not break down nearly as fast as a petrolium based oil!



Do some research, and I think you will not make that kind of statement!

Amsoilman... ... . Right On !!!



Caveman... . I am submitting to Congress a bill requiring all lubricant manufacturers to post a "Born On" date on all oil containers... (as in Budweiser). That way we can tell if it has been on the shelf to long and has broken down in the can.

 

[Vaughn MacKenzie]

Caveman, I am curious to see how your analysis numbers turn out. A long time ago when Kevin Dinwidde was on here (who touted LE) one or two guys ran LE engine oil for awhile and the oil analysis numbers were mediocre, wear numbers went up as I recall. I don't recall exactly and of course there are a lot of variables too.



I looked into LE for my rear axle and transmission, but the poor cold-weather flow properties steered me away.



Vaughn

 

[RJOL]

Been using Delo 400 15 40W ($32 for 6 Gals. at Costco) for 50K. Only oil I've every used and it works great...

 

[Caveman]

I have 15K on my 04. 5 now. I was using Delo400. I switched to a non-synthetic long drain oil from Lubrication Engineers. I'm waiting for my next change to send in a sample for testing. Synthetic oil has a tendency to brake down if you don't run the engine everyday. When that happens the additives separate and the oil doesn't perform as it should. The additives will not mix back in until the oil gets to normal operating temperature. This is bad for drivers who let their truck sit a lot and only drive short distances. My truck doesn't have this problem with 15K after 6 months. /QUOTE]



I do not know where you came up with "Synthetic oil has a tendency to brake down if you don't run the engine everyday. "!When that happens the additives separate and the oil doesn't perform as it should. The additives will not mix back in until the oil gets to normal operating temperature.



Anyone with any kind of knowledge concerning oils, will tell you quite the opposite! Synthetic oils, especially PAO based synthetics, do not break down nearly as fast as a petrolium based oil!



Do some research, and I think you will not make that kind of statement!

So, I didn't use spell check, sorry. It should be 'break down'. The engineers told me it was actually referred to as "falling out of suspension".



From the engineers;

Synthetic oil is made of of various chemical components called additives. Yes, most of these chemicals are in some way petroleum based. However, they do not blend naturally. In a compund form all chemicals are said to be in suspension. This is not a natural state and some of these chemicals will eventually separate or "fall out of suspension".



This did not come from the guys at LE. This came from one of my customers. They make a synthetic oil that was my second choice to DELO, AMSOIL being the third for a synthetic. AMSOIL just never held up as good in my non-diesel race cars. The diesel oil may be different.



You may be a good Amsoil rep, but I liked to get the facts from the guys that make the stuff. Some people like synthetic oil. I'll see how this non-synthetic compares when I get my sample back.

 

[amsoilman]

CAVEMAN,



Although the engineering of each synthetic base stock varies depending on the particular stock, synthetics are generally made through a reaction process. This

reaction process significantly improves the consistency of the stock and its molecular uniformity. Mineral stocks, on the other hand, are obtained through a process of distillation.



Distillation slightly limits the molecular diversity that may exist within the stock , but does not completely eliminate nonessential molecular structures. This is important because unnecessary molecular structures produce variations in the stock's performance. The ideal lubricants chemical composition is one in which the molecular construction is identical throughout, such as in a High quality synthetic base stock. Because of the way synthetic stocks are produced, they are molecularly uniform and contain significantly less undesirable materials than a mineral base stock.



Molecular uniformity also affects the properties that each type of lubricant possesses. The properties of mineral oils tend to vary due to inconsistencies in the crude from which they are obtained. The properties and performance features of synthetics, on the other hand, are very predictable. Once again, this is due to their molecular uniformity.



High quality synthetic lubricants are formulated to take advantage of the superior properties of synthetic base stocks. They provide excellent lubrication and wear protection and are designed to resist the chemical breakdown processes that limit the service life of conventional mineral-based oils. This is why a high quality synthetic oil can greatly reduce oil change intervals.



Wayne

amsoilman

 

[Caveman]

That's great. Sounds like something straight off of a brochure.



So, what's the point?

 

[amsoilman]

CAVEMAN,

What's my point?



My point was to try to explain "why" synthetics do not "break down" like conventional petrolium oils do! Afterall, it was you that said "Synthetic oil has a tendency to brake down if you don't run the engine everyday. When that happens the additives separate and the oil doesn't perform as it should".



Best regards,



Wayne

amsoilman

 

[Caveman]

CAVEMAN,

What's my point?



My point was to try to explain "why" synthetics do not "break down" like conventional petrolium oils do! Afterall, it was you that said "Synthetic oil has a tendency to brake down if you don't run the engine everyday. When that happens the additives separate and the oil doesn't perform as it should".



Best regards,



Wayne

amsoilman

So, you send me an email saying that I claimed synthetics break down quicker than conventional motor oil. Yet your post says something completely different. I never said anything about synthetics breaking down quicker nor would I claim such. I did refine what I meant by 'breaking down' as I repeated a statement from an engineer incorrectly. I should have initially said the components 'fall out of suspension' or separate.



My point all along is that the chemical composition which makes synthetic adhere better to surfaces and provide better lubrication when out of complete suspension is more detrimental to moving engine parts than a normal motor oil. The synthetics that adhere and lubricate are less dense than petroleum bases. They will float on top of the petroleum base. If your oil pump pulls from the bottom of the mixture in the pan you are recirculating in your engine something with lesser qualities until that top layer is reached. An easy demonstration of this effect is to take a clean glass jar and fill a good portion with your next synthetic change. After a period(depends on too many variables to say exactly) you will see layers of liquid including components of diesel gas.



Part of the reason gasoline and diesel tretment products(excluding anti-gel) are questionable to use relates to this effect. These products can affect this falling out of suspension process in a negative sense.

 

[amsoilman]

So, you send me an email saying that I claimed synthetics break down quicker than conventional motor oil. Yet your post says something completely different. I never said anything about synthetics breaking down quicker nor would I claim such. I did refine what I meant by 'breaking down' as I repeated a statement from an engineer incorrectly. I should have initially said the components 'fall out of suspension' or separate.



My point all along is that the chemical composition which makes synthetic adhere better to surfaces and provide better lubrication when out of complete suspension is more detrimental to moving engine parts than a normal motor oil. The synthetics that adhere and lubricate are less dense than petroleum bases. They will float on top of the petroleum base. If your oil pump pulls from the bottom of the mixture in the pan you are recirculating in your engine something with lesser qualities until that top layer is reached. An easy demonstration of this effect is to take a clean glass jar and fill a good portion with your next synthetic change. After a period(depends on too many variables to say exactly) you will see layers of liquid including components of diesel gas.



Part of the reason gasoline and diesel tretment products(excluding anti-gel) are questionable to use relates to this effect. These products can affect this falling out of suspension process in a negative sense.

I will not comment on this subject from you, as you have definately been missinformed, and appear to not want any good explainations regarding such.



Wayne

amsoilman

 

[hasselbach]

wow, and I thought the debate between the automatic and 6-speed was controversial!