Went to change the oil today... Went to Wally world like I usually do and picked up 2 jugs of T&SUV like I usually do, get home drain the oil, change filter, dump oil in and as the second jug is draining into the engine I see 5W-30 on the jug!!!! :eek: :wtf1: Censored :help2:

When did they change it to 5W-30?? I don't see the CI-4 or CH-4 rating on it like the last jugs, but it still claims it's for turbocharged diesels. I haven't started the truck yet, will it be ok, or should I look for the "right stuff"? Do I have any recourse with Wal-Mart or Mobil? :help2:

I could not find Moble 1 Truck and SUV oil at Wally World here in Houston... I went to three different stores and it was not on the shelves.... Last oil change I had switched to the Moble 1 and there was plenty on the shelves so I know this is a recent change...

I ended up going with Shell Rottila (SP)..

They switched this a few months back... I wouldn't run the truck with it in there.. There is a new Mobil 1 diesel coming out soon. I think its the end of April or May time frame.

:exactly: what Snowbandit said...and drain it again :mad: to get proper stuff put in would be my recommendation.

Well, like swatkins said, I went to several other stores, and the 5W-40 is NOWHERE to be found... So I got Shell Rotella T 5W-40 Syn. My grandfather says that switching brands is bad news, but you have to take a lot of what he says with a few grains of salt... The truck has had Mobil since day one (delvac 1300 up to about 10k, then Delvac 1/T&SUV since). This shouldn't pose a problem, right?

I'll probably end up using the 5W-30 in my car since it's only lightly tainted and almost the same as the 10W-30 Mobil 1 I use in it. Well... out to drain the 5W-30 out of the truck... It would've been nice if they had changed the label a bit more to make it more noticable that it's not the same stuff...:rant: Censored

here are the viscosity ratings on the Mobil 1 from their website:
Mobil 1 0W-20 (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_1_0W-20.aspx)Mobil 1 0W-30 (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_1_0W-30.aspx)Mobil 1 0W-40 (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_1_0W-40.aspx)Mobil 1 5W-20 (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_1_5W-20.aspx)Mobil 1 5W-30 (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_1_5W-30.aspx)Mobil 1 10W-30 (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_1_10W-30.aspx)Mobil 1 Truck and SUV 5W-30 for Gasoline Engines (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil1_Truck_SUV_5W30.aspx)Mobil 1 Turbo Diesel Truck 5W-40 for Diesel Engine (http://www.mobil1.com/USA-English/MotorOil/Oils/Mobil_1_Turbo_Diesel_Truck_5W-40.aspx)
I hope wallyworld still sells the 5w-40 since that's what I've been running in my truck!
:eek:

You can change brands, it's not a problem.
Some old myths about parrafin based oils (supposedly Pennzoil and Quaker State) and turning the engine to sludge when mixed with other oils, but it's not a big deal anymore (or maybe never was).


Rotella 5w40 synthetic (actually a group-III mineral/synthetic) and Rotella 15w40 (dino) are great oils. Mobil-1 Delvac 1300 is a dino 15w40 and is comparable to Rotella 15w40... Mobil Delvac-1 is synthetic and is basically the same as the OLD Truck and SUV.

T&SUV was reformulated to the 5w30 for gassers only. The new product for us is "Mobil 1 Turbo Diesel Formula" which is not scheduled for release until mid-April. You can probably still find Delvac-1 at truck stops.


This whole fiasco is what drove me away from Mobil... I've got a 2.5 gallon bottle of Amsoil 15w40 synth sitting on the floor next to my desk that is going to be in the engine in a couple of hours.
If your truck is your only available vehicle, you'll probably be okay to drive it back to WM to get the right oil, but I wouldn't leave it in there for more than a few miles. The main issue with Diesel-rated oils is their ability to suspend soot.


If it were me, Cougar, I'd be writing a letter to Mobil demanding a refund FROM THEM (not WalMart). They have used the same name on two different and incompatible products. The bottles look the same, and some WalMarts in my area still have the OLD formula on the shelf.
I suspect that this is going to be a common mistake over the next few months, and it was a big mistake of Mobil not to make an obvious packaging change and name change.

Their whole reformulation over the last year has been poorly marketed.... their marketing has been focused on the "Clean 5000" and "Clean 7500" oils, which is Mobil's attempt to recapture the non-synthetic market from Castrol and Valvoline. There has been virtually no public information dissemination on the changes in their synthetic lines.

If it were me, Cougar, I'd be writing a letter to Mobil demanding a refund FROM THEM (not WalMart). They have used the same name on two different and incompatible products. The bottles look the same, and some WalMarts in my area still have the OLD formula on the shelf.

Oh, I'll be calling them on Monday at the very least... Fortunatley, I also have my Cougar, so the truck was never started with the 5W-30. It just sat in the crankcase until I drained it back into the bottles it came in (gotta love the fumoto valve!) It was surprisingly black considering it was never run, but I suspect it will be ok to use in my car unless Mobil decides they want it back or something...

They DEFINATLEY should have changed the label. If it hadn't been almost identical, I would have paused and looked closer. Censored .

Rotella 5w40 synthetic (actually a group-III mineral/synthetic) and Rotella 15w40 (dino) are great oils. Mobil-1 Delvac 1300 is a dino 15w40 and is comparable to Rotella 15w40... Mobil Delvac-1 is synthetic and is basically the same as the OLD Truck and SUV.

So the Rotella 5W40 isn't a full synthetic? If not, then it's really being mis-advertised. Should be labeled as a Semi-synthetic.

Oh, I'll be calling them on Monday at the very least... Fortunatley, I also have my Cougar, so the truck was never started with the 5W-30. It just sat in the crankcase until I drained it back into the bottles it came in (gotta love the fumoto valve!) It was surprisingly black considering it was never run, but I suspect it will be ok to use in my car unless Mobil decides they want it back or something...

They DEFINATLEY should have changed the label. If it hadn't been almost identical, I would have paused and looked closer. Censored .



So the Rotella 5W40 isn't a full synthetic? If not, then it's really being mis-advertised. Should be labeled as a Semi-synthetic.I understand mobil one was hurt because of the damge

So the Rotella 5W40 isn't a full synthetic? If not, then it's really being mis-advertised. Should be labeled as a Semi-synthetic.
This is the result of the Castrol lawsuit about 10 years ago.
Mobil marketed true Group-IV synthetics, and Castrol started marketing a Group-III as a synthetic. Mobil sued, Castrol won, and Shell and Valvoline jumped into the market with their group-III's.

Rotella (as well as other group-III oils) ARE synthetic, but they are using a mineral oil base, rather than pure PAO base stocks. This is also why they are cheaper.

FWIW, Amsoil buys their base stocks from Mobil and blends in their own additive packages... I trust it, and a big plus is they make a 15w40 synth that's a bit cheaper than M1 5w40.

I understand mobil one was hurt because of the damge What damage?

why go to walmart?

How bad would it be to run that 5W-30? I replaced oil yesterday and drove around with it, (50 mile trip), and there is no diesel formula in sight..

How bad would it be to run that 5W-30? I replaced oil yesterday and drove around with it, (50 mile trip), and there is no diesel formula in sight..

It'll lubricate all right, but it no longer has API CI rating for diesel. It will not provide protection and management for soot like any gasser oil not CI rated for diesel. Abrasive soot being the most damaging aspect of diesel lubrication, I think you're missing the most important additives.:eek:

Tom,

Thanks for that info. I guess it'll be ok driving it for a day or two till I get the right stuff put in and weather permits.

Weee.. just found some at Kragen Auto parts.. replacing it now.

ARRRRRRGGGGHHHHH I just changed the friggen oil today and I never noticed the bottles were marked Truck n SUV 5w30. Censored I may never buy a Mobil 1 product again. This just cost me $50 because they changed the product and not the label. :rant:

Like I said above... I'd be sending a letter (with copies of receipts) to Mobil demanding a refund.

I just pulled a bottle from the garage. No doubt it says for gasoline engines in the same friggen bottle as the old Truck n SUV. Idiots. I guess I'll shoot M1 a email. :mad:
At the bottom of the label in small print it says ;

Approved for use and exceeds warranty requirements for gasoline, turbocharged and diesel engines in the following applications:
ACEA A1/B1
GM 6094M
Ford WSS-M2C929-A
MS-6395

At the bottom of the label in small print it says ;

Approved for use and exceeds warranty requirements for gasoline, turbocharged and diesel engines in the following applications:
ACEA A1/B1
GM 6094M
Ford WSS-M2C929-A
MS-6395
Hmm.... what's it's API rating? If it's a CH-4 or CI-4, you'll be okay, but 5w30 is light (like Fargo N.D. light)... get it out of there before temps start to warm up.

There is NO CH or CI rating. It's getting drained today but I expect we will here some good BS story from Mobil 1 about how the current Truck & SUV is still ok and we do not need to drain it. -:t
I sent an email to Mobil 1 last night.

http://i48.photobucket.com/albums/f229/Docsknotinn/oil003.jpg

This is what you need now...
http://mobil1.com/USA-English/MotorOil/Images/Products/Mobil_1_Turbo_Diesel_Truck_5W40_Top.gif

Mobil1 turbo diesel engine formula...

Delvac 1 can still be found at some truck stops and Lube distributors...

I went to three different auto stores today. Two had Truck & SUV 5w-30 mixed in with 5w-40. Not even the vendors are noticing the difference because of the packaging. No one has the turbo diesel formula.

I found the Mobil 1 Truck & SUV 5W-40 at O'Reilly's auto parts and we have a store called TruckPro here that has Mobil 1 Delvac 5W-40 in gallons for $26.49 ea.

Is the fomulation for the new Turbo Diesel oil the same as Delvac 1.
Just wondering.
:grd:

According to the news release that I saw from Mobil, the new Mobil 1 Turbo Diesel Truck 5W-40 oil will not be available until mid April.

Use Rotella Syn 5w-40. I have used both it and the Mobil product, and I think the truck is quieter with the Rotella Syn.

Both good products, but Rotella is a Group-III mineral base.
It would not have been considered a true synthetic pre-lawsuit.

There is NO CH or CI rating. It's getting drained today but I expect we will here some good BS story from Mobil 1 about how the current Truck & SUV is still ok and we do not need to drain it. -:t
I sent an email to Mobil 1 last night.

Hey,

I am sure that they will feed you a line of corporate BS that my confuse the hell out of you!! Talking their way around thins is the way some companies are!!

Keep us posted. I would love to hear the reply!!

Well it appears that they are just not going to respond at all. Most likely they are concearned about a class action lawsuit or something of the sort. I can't even imagine the guys that will be using this product and potentially damaging their engines. I ran it for two hours and when I drained the oil it was a black as coal and thin. Not good. I switched to Rotella Synthetic and honest to god my fuel economy went up almost 1 mpg. :eek: Go figure.

Both good products, but Rotella is a Group-III mineral base.
It would not have been considered a true synthetic pre-lawsuit.
Well, at this moment in time, you can either change your oil with Group III Rotella Syn, or NOT change your oil because you are waiting for unobtainable Mobil 1 CI-4 rated 5w-40, under whatever name they choose to call it in the future.

For those needing an oil change today, I think that the Rotella Syn is more practical than looking for a Group IV product that is not on the shelf.

Well, at this moment in time, you can either change your oil with Group III Rotella Syn, or NOT change your oil because you are waiting for unobtainable Mobil 1 CI-4 rated 5w-40, under whatever name they choose to call it in the future.
I switched to Amsoil 15w40 synth. It's also a Group-IV (Amsoil buys their PAO base stocks from Mobil).
Order it Thursday evening, it's on my doorstep Monday afternoon, and best of all, it's truly the proper grade for warmer temps (pretty much all year here in SoCal.

And if you'll look at my posting history here and on Tundrasolutions, I hav always been VERY critical of Amsoil... so I did not come about this decision lightly.

Just wonder if any one many have any thing to say about Castrol 15W40? I can get 12 Liters for around the same cost as 8 Liters of RotellaT or Quaker State.

Casteroil? Isn't that something you take when your sick to make you poop? ):h

Any of the current name-brand HD 15w40 oils are going to be more than adequate under normal conditions with 'reasonable' temperatures and change intervals. Just watch the API rating and make sure it is a CH-4 or CI-4... lower ratings are not enough for a modern EGR-equipped engine.

The only OTC Group-IV synthetics (that I am aware of) are Delvac-1 and the old M1 T&SUV. There are a couple of other G-IV's available, but not at the local auto parts stores.

Amsoil, and I believe Redline, Royal Purple, and Schaffers are all G-IV, available by mail or online.

AFAIK, Amsoil and either Redline or Royal Purple are the only companies that offer a synthetic (either G-III or G-IV) in a 15w40... the rest are all 5w40.

I ran it for two hours and when I drained the oil it was a black as coal and thin. Not good.

I didn't even start my truck with the 5W-30 in it. Poured it in, noticed the 5W-30 rating. Censored Censored Censored Censored a bit, got in the car to look for 5W-40 oil which I couldn't find, so I got Rotella 5W40. Drained the 5W-30 out and it was black as coal.

Drained the 5W-30 out and it was black as coal.
When you change your oil, if you do not put the front wheels on ramps OR jack up the front, there's about a half quart that won't drain.
If you look at the bottom of the pan, you'll see a slight rise in the middle... I think it clears the steering link. Nothing in that front "dip" will drain... and a little extra will remain if you are using a Fumoto.

I run the front up on ramps (awesome use for 4-lo :D ), and then after it stops draining, I pour one quart of Rotella synth through with the drain open.
My dipstick looks clean for as long as 500 miles, and doesn't get really black until about 1000.

I received a response from Mobil 1. They are going to refund the cost of the oil. I am very thankfull for that. I switched to Rotella Synthetic and I just got back from a trip to NC, Smokey Mtns etc. Nearly 2k on the oil and it's as clear as the day I put it in. What is really shocking is that my fuel economy went WAY up. On this trip I averaged just under 20 MPG RT! My best day was 21.5 MPG. I am at 70k and the '04 is 2.5 years old. The best day I ever had with Mobil 1 was 19.5 MPG but 99.9% of the time I struggled to get 18.5. The oil was the only change I made. I am shocked by this to say the least. :ro)

I received a response from Mobil 1. They are going to refund the cost of the oil. I am very thankfull for that. I switched to Rotella Synthetic and I just got back from a trip to NC, Smokey Mtns etc. Nearly 2k on the oil and it's as clear as the day I put it in. What is really shocking is that my fuel economy went WAY up. On this trip I averaged just under 20 MPG RT! My best day was 21.5 MPG. I am at 70k and the '04 is 2.5 years old. The best day I ever had with Mobil 1 was 19.5 MPG but 99.9% of the time I struggled to get 18.5. The oil was the only change I made. I am shocked by this to say the least. :ro)

Hey,

Glad to hear that you got reimbursed for the Mobil 1 mistake!! Moronic moves like that would turn me away from buying their products, for a long time to say the least!! Actually at the price of it up here, RP or Amsoil are looking like a better way to go.

I ended buying the Rotell Synth 5w-40 at wallyworld when I couldn't find the Mobil1 5w-40 I've been using. Be interesting to see if there is any mileage difference between the two...I assumed that Mobil would be the "better" oil since it's a true PAO synthetic but what the hell, I'll give the Rotella a chance now, just wish it came in the 5qt jug like the M1 did...

I changed mine the first time with Mobil Delvac. This time I used Mobil Delvac Synthetic. I bought 3 gal. at a TA truck stop, some truck stops have it and some don't. It was priced at $28.95/gal, I think it cost me about $5-$6 for the taxes, that road king points card sure comes in handy.:D

I received a refund check today!

I switched to Amsoil 15w40 synth. It's also a Group-IV (Amsoil buys their PAO base stocks from Mobil).
Order it Thursday evening, it's on my doorstep Monday afternoon, and best of all, it's truly the proper grade for warmer temps (pretty much all year here in SoCal.

And if you'll look at my posting history here and on Tundrasolutions, I hav always been VERY critical of Amsoil... so I did not come about this decision lightly.

Just a note Rich, correct me if I'm wrong on this...I thought 15w-40 oil was no more the "proper" grade for the Duramax than 0w-40 or 5w-40, they all are too thick to be ideal at startup and they are all approximately the same viscosity at operating temp. The lower number does not affect warm temperature operation, it indicates how thick the oil is in cold (startup) temperatures. I have been doing a lot of research and reading on oil....Everybody should do a yahoo search for A.E. Haas oil 101, he is a consultant to SAE and puts a lot of things straight in his articles....

Quite true, however, for warm climates, 15w40 is perfectly suitable.

Now for the "gotcha" part.

15w40 is superior to 5w40 in it's ratio of low/high vis. Oils with wider vis ranges require more viscosity improvers to maintain the high number... at the risk of oversimplifying, a 15w40 is a 15w with additives to bring it to 40 under operating conditions.

Viscosity improvers are not as stable as the base stock, so a 5w40 is more likely to (and will more quickly) "shear down" in grade.
I've seen UOAs from wet-clutch motorcycle applications where a 5w40 has turned into a 5w30 in a few hours. Granted, this is an extreme condition with the motor oil lubricating the gearbox and clutch... this is extremely hard on the shear stability of the oil.

Synthetics, particularly group-IV PAO's, do not require the higher concentrations of VIs as non-synthetic oils, which is why a 15w40 is the "recommended" oil, yet, other than a few suppliers, we only find 5w40 in synthetics. The 5w40 synth is as stable (or more stable) than a 15w40 dino.... however, it still stands to reason that a 15w40 synth is going to be more stable than a 5w40 synth.... and totally blow a 15w40 dino out of the water.

Makes sense, Thanks Rich. After all the stuff I've read, it's STILL confusing at times. No wonder you hear so much incorrect info! :D

One thing's for sure, I wouldn't use anything but synthetic in my Duramax....):h

Makes sense, Thanks Rich. After all the stuff I've read, it's STILL confusing at times. No wonder you hear so much incorrect info! :D

One thing's for sure, I wouldn't use anything but synthetic in my Duramax....):h
Agreed.... and WRT the Vis improvers, I wouldn't worry about any 5w40 synth in our trucks (group 3 or 4) for a "reasonable" change interval.... meaning following the DIC with no analysis or bypass filter, or "Double-DIC" with bypass filter.

Anything over that, I wouldn't touch with a 10-foot pole without analysis, and at that point, how much is the savings worth?
You're still changing the filters with the DIC ($15, or $30 if you're changing the bypass filter and replacing 2 qts), plus 20 for the analysis... you've spent $20 to save $40, assuming the analysis comes back "Okay to continue"

Next time you get stopped for speeding, just tell the officer you quit looking at speed limit signs cause they all look alike. You'll probably have better luck with the officer than with explaining to Mobil why its their fault for you not paying attention and reading the label.

Actually, if you go back and check (or maybe it's another thread) you'll see that Mobil indeed sent at least one guy a check because of this.

You EXPECT speed limit signs to change... you don't expect a product to carry the same name and same appearance but to change to a completely incompatible formula.