Mobil 1 in our diesels

[curatchko]

Mobil says their mobil 1 oil can be used with Diesel engines.



When I inquire about this with all the 'diesel' experts, I get replies back about soot control.



What if I use a bypass filter that gets the soot out of the oil? Will it then be acceptable to use regular Mobil 1 oil???



Seems logical to me... .

 

[Vaughn MacKenzie]

I wouldn't use it, there's more to soot control that just filtering it out and I don't think Mobil 1 has it. At 3 microns or whatever it is there will be a lot of soot that doesn't get filtered out.



The unfiltered soot won't hurt your engine, but it will fall out of suspension and build up in your engine if you don't use diesel-specific oils. If you ever changed back to say Delvac 1 or Delo 400 several thousands of miles later chances are you're going to have problems with the load of soot the oil will pick up that has accumulated.



Why bother with Mobil 1 when there's other perfectly good oils? If you want synthetic get Delvac 1, Amsoil, Royal Purple or Redline. I know they're not as readily available but with some looking you can find it or have it shipped (which is what I do with Amsoil and the cost is reasonable).



Vaughn

 

[curatchko]

Honestly,



There isn't any place around me that carries the 'good' synthetics for Diesels..... there's Amsoil, but again, that's either mail order or through a friend of a friend who has a dealer near him...



I like to walk into the store, and pick up what I want and get it... . not order it here, wait there, etc... .



Besides, Mobil 1 is suppose to be good stuff... and you can get it at Costco cheap.





I may try it anyways... the bypass filter I have has to get most of not all the soot out.....

 

[tobaccogrower]

i've ran mobil 1 since 30,000 miles.

truck runs better and better every day! i now have 91,000 miles with no problem's. mobil 1 has a CF rating and is turbo diesel approved. i wouldn't worry about it. just my $. 02... james

 

[Rosco]

Does the Mobil 1 meet the current CI-4 specification required for the Cummins ISB-E? If it doesn't then you should not use it.



Mobil makes a specific synthetic diesel oil, it's called Delvac 1.

 

[y-knot]

Several years ago Mobile 1 use to be pretty good, and finished well in test comparisons. When they changed the laws reguading the way synthetics were labled, Mobile 1 deluted there oil by 30%. So in my mind, Mobile 1 is synthetic any more. I use to use Mobile 1, I now use AMSOIL.

 

[swampfox]

Mobile One

Here's the info on Mobil One from the Mobil web site. Based on this it appears Mobil One is OK for the Powerstrokes and Duramax but not for the Cummins. Note the reference to "light" vrs "heavy" duty.



From the web site (FAQ)

Myth "Mobil 1 can't be used in diesel engines. "



Mobil 1 with SuperSyn™ will provide excellent service for passenger car and light-duty truck diesel engines (API CF or CD), as well as European diesel cars that require ACEA-quality oils. (This is the oil specification used in Europe and developed by European car companies. )





Heavy-duty truck engines that require API CE, CF-4, CG-4, CH-4 or CI-4 should use one of the products from the Delvac® line – Mobil Delvac 1® synthetic engine oil or Mobil Delvac 1300 Super®. Mobil Delvac 1 synthetic oil can help improve fuel economy, extend oil drain intervals, extend engine life, provide enhanced wear/cleanliness protection and reduce oil consumption. Delvac products can be purchased at a large number of truck stops across America, some retail stores, auto parts stores and from ExxonMobil distributors. "

 

[Cooker]

curatchko,

The other issue mentioned in your other post was the AW, or anti-wear, additive package. Most gasser oils do not have as robust AW additive packages as Heavy Duty Engine Oils. This is an important issue with high compression diesel engines.



I personally would not use Mobil 1 in a newer diesel engine that calls for the most recent oil spec, CI-4. I think this is taking a big step backwards as CI-4 is a superior engine oil as compared to previous specs.



If you are looking for an easy to get synthetic I would use Mobil Delvac 1. You probably cannot but it at NAPA or Auto Zone, but I bet your local Mobil distribuitor has it in stock. Or you can purchase the exact same Mobil Delvac 1 rebranded at a Caterpillar shop. I think it is called CAT DEO 5w40.



One other thing to consider, warranty.

 

[Rosco]

curatchko, I know you said that you don't like mail order but I think it's a decent service. Last week I went to Amsoil's website and ordered up a case of 75w90 gear lube and 3 days later it was at my door. Today, I ordered a Mag Hytec diff cover from Geno's and I'll have it the beginning of the week. Plus, Things like oil and filters are consumables that you know in advance you will need so you can preplan and order them beforehand.



Finally, Along with the other good advice that's been posted I strongly advise you not use the Mobil1. According to what swampfox posted it appears to the Mobil1 is 4 specifications behind what our engine requires.

 

[Diesel Gunner]

This is a free country and you may do as you wish, however, using Mobil 1 in youir 2004 is a huge mistake. I seriously doubt that the TBN is high enough and I am not familiar with a 5W-40 or 15W-40 viscosity, whichever you are using.



It is difficult to imagine that there is not a local source for a high quality lubricant that meets CI-4 such as Delo 400, Delvac, etc. As I said you can use anything you wish, heck put 5w-20 in it, just don't set your expectations very high about how long it will last.



OK, I set myself up. Who is running 5w-20?

 

[curatchko]

Well, thanks for the replies. I'll think about it some more. Can't do anything for a few thousand miles anyways.



Chris

 

[nickleinonen]

give wally world a try. my local wally world carries delvac 1, but it's seems expensive to me [±$36. 00 cdn 4 liters]. if i could order online to have the lube shipped to canada without all the duty fee's i'd probably order from avlube.com [i think that's the site] the case works out to $10. 00 [cdn] a bottle less than my wally world sells it for.

Originally posted by curatchko

Honestly,



There isn't any place around me that carries the 'good' synthetics for Diesels..... there's Amsoil, but again, that's either mail order or through a friend of a friend who has a dealer near him...



I like to walk into the store, and pick up what I want and get it... . not order it here, wait there, etc... .



Besides, Mobil 1 is suppose to be good stuff... and you can get it at Costco cheap.





I may try it anyways... the bypass filter I have has to get most of not all the soot out.....

 

[Elite1]

Re: Mobile One

Originally posted by swampfox

Here's the info on Mobil One from the Mobil web site. Based on this it appears Mobil One is OK for the Powerstrokes and Duramax but not for the Cummins. Note the reference to "light" vrs "heavy" duty.



From the web site (FAQ)

Myth "Mobil 1 can't be used in diesel engines. "



Mobil 1 with SuperSyn™ will provide excellent service for passenger car and light-duty truck diesel engines (API CF or CD), as well as European diesel cars that require ACEA-quality oils. (This is the oil specification used in Europe and developed by European car companies. )





Heavy-duty truck engines that require API CE, CF-4, CG-4, CH-4 or CI-4 should use one of the products from the Delvac® line – Mobil Delvac 1® synthetic engine oil or Mobil Delvac 1300 Super®. Mobil Delvac 1 synthetic oil can help improve fuel economy, extend oil drain intervals, extend engine life, provide enhanced wear/cleanliness protection and reduce oil consumption. Delvac products can be purchased at a large number of truck stops across America, some retail stores, auto parts stores and from ExxonMobil distributors. "

Our Trucks are Medium Duty, I believe...

 

[mhenon]

Diesel rated synthetic

Wal-Mart generally carries Rorella , Delo and Delvac 1300 dino oils. At most of the stores I've been in they're also carrying Rotella synthetic 5w 40 oil. It's a group III synthetic but thats OK and a lot cheaper the some of the others.

Check your local Walmart and see whats available.



Mike

 

[drrhoades]

Is it ok to run Rotella synthetic 5W-40 oil. In the winter then once it warms up again put in regular Rotella T 15W-40?



Thanks,

Doug

 

[Cooker]

Originally posted by drhoades

Is it ok to run Rotella synthetic 5W-40 oil. In the winter then once it warms up again put in regular Rotella T 15W-40?

It would be fine, but I would see no reason to switch. You can easily run the 5w40 year round.

 

[DPKetchum]

I hate shopping or going ito stores for stuff. I have my hady/dandy Amsoil catolog and its has their 1800 number on it and I just pick up the phone in 48/72 hours this BIG truck pulls up with a nice man who leaves it at my FRONT porch. How hard could it be.

 

[dpuckett]

Re: Re: Mobile One

Originally posted by Elite1

Our Trucks are Medium Duty, I believe...

ACtually, they are a Medium Heavy duty, as opposed to a Light Heavy duty that the other 2 are rated for. I forget exactly what the ratings mean; I believe it has something to do with life expectancy of the emission systems, and overall life expectancy. I believe the light ratings would apply to the 5 cylinder MB diesels, VWs diesels, et al.



Daniel

 

[DPKetchum]

Everthing I have read is that OUR trucks have a HEAVY DUTY ENGINE and the powrstroke was a LIGHT duty. Don't know about the duramax

 

[Vaughn MacKenzie]

Yes ...

Originally posted by DPKetchum

Everthing I have read is that OUR trucks have a HEAVY DUTY ENGINE and the powrstroke was a LIGHT duty. Don't know about the duramax

Cummins: Medium Heavy Duty

PSD/DMax: Light Heavy Duty



Make sense now?