Oil sample results

[SHobbs]

Like many I have the oil change indicator telling me an oil change is due around the 3800 mile mark. Last oil change I went an additional 1000 miles under the recommendation of Blackstone Labs and sent another sample. Not sure if there is an impending problem or if all is okay. I will only post those that increased, first numbers 3436 miles on the oil and the second numbers are the 4958 mile oil change. At what percentage of fuel in the oil does it become detrimental to the engine? Blackstone is suggesting going to 7000 miles on the current oil.



Aluminum,,,,,2... ... . 4
Tin,,,,,,,,,,,,,0... ..... 3
Iron,,,,,,,,,,,,16... ... 19
Potassium,,,,17... ... . 22

Fuel %,,,,,,,,<0. 5..... 3. 0
Water,,,,,,,,,0. 0... ... . 0. 0 incase coolant in the oil comes up.

All the other numbers went down or stayed the same.

Thanks Scott

 

[sag2]

In the early 6. 7 days the light was coming on when the fuel dilution was between 3-7% on average. The newest trucks are much better than that. About 5% is not a problem at all, but you should not go too much past that every time. I have some photos of a 6. 7 that the customer ignored the light on and it finally gave up at about 70,000 miles. I need to find them again and post, because you would not believe it.

 

[Don]

I am no expert here, but what from I understand there is nothing that monitors the oil, only the driving habits/conditions and the light comes on at a predetermined time/miles based on that. At least that is what a service tech told me. Correct me if this is incorrect.
Don

 

[HBarlow]

I am no expert here, but what from I understand there is nothing that monitors the oil, only the driving habits/conditions and the light comes on at a predetermined time/miles based on that. At least that is what a service tech told me. Correct me if this is incorrect.
Don

That's a fact. The oil change light is a computer calculation based on some complicated algorithm which used the numbers of starts, average power level, and other mysterious data.

 

[mfurrh55]

On the 2012 chrysler 300 i have, the tech told me that they have a sensor that monitors the viscosity of the oil, and then the change oil light comes on, Monte

 

[Dodoro]

Correct, Mfurr55. The sensor can tell if the wrong viscosity oil is put in the engine. It also measures fuel dilution and a few other things I can't think of right now. This is straight from an engineer at Chrysler.

 

[crabjoe]

Correct, Mfurr55. The sensor can tell if the wrong viscosity oil is put in the engine. It also measures fuel dilution and a few other things I can't think of right now. This is straight from an engineer at Chrysler.

Either I've got bad info or an engineer @ Chrysler has pulled your leg.

If there was a sensor to measure viscosity or fuel dilution, how come the oil change indicator doesn't come back on, right away, if you reset it without changing the oil? It won't even come back on after a tank of fuel is run through the motor... .

 

[Wygate]

I did a lot of research on this, I finally talked to Cummins directly, they stated unequivocally that 5% is the Max F/O dilution for the 6. 7.
I had 64% in my 09.
My 12 has had short run before the light came on also, 4500 or so for first change? Don't mind keeping up w/ what the truck thinks, just don't understand why the duration is advertised as 7500 and doesn't come close. Rather change oil then have her at a dealership anyway!

 

[sag2]

On the 2012 chrysler 300 i have, the tech told me that they have a sensor that monitors the viscosity of the oil, and then the change oil light comes on, Monte

Not exactly true. Only the Mercedes built engines (Chrysler no longer uses) had an actual sensor to measure oil condition. ALL the Chrysler engines, gas and diesel use programming (algorithm) to determine the oil condition. The 3. 6 or Hemi in your 300 uses an algorithm for the oil change light, and uses the response time for the cam phaser and or MDS solenoids to determine the oil viscosity. The two are not related. The wrong oil code is an information code that turns on the CEL, the oil change reminder sets a message in the cluster or EVIC.

 

[WalterJ]

Isn't it less expen$ive to just change the oil at some regular interval, rather than pay for all those oil tests? Maybe one annual test to look for metals?

 

[HBarlow]

Isn't it less expen$ive to just change the oil at some regular interval, rather than pay for all those oil tests? Maybe one annual test to look for metals?

Ohhh noooo! We're not supposed to say that. Use of regular lube oil testing by expensive labs instead of changing oil and filters as the manufacturer tells us to do in the owner's manual is a religion for some. We're not allowed to criticize another man's religion.

 

[mfurrh55]

Not exactly true. Only the Mercedes built engines (Chrysler no longer uses) had an actual sensor to measure oil condition. ALL the Chrysler engines, gas and diesel use programming (algorithm) to determine the oil condition. The 3. 6 or Hemi in your 300 uses an algorithm for the oil change light, and uses the response time for the cam phaser and or MDS solenoids to determine the oil viscosity. The two are not related. The wrong oil code is an information code that turns on the CEL, the oil change reminder sets a message in the cluster or EVIC.

I was just relaying what the service mgr. told is all, I have no idea, I just change the 300's oil at 4000 miles , sounds like a good round number, Monte

 

[EDankievitch]

I use to do oil changes at 5,000 miles. With this 2012 that I now have, after a few oil sample checks, I change the oil each time the computer says to do so. It sucks sometime I get 2200 miles other times 3500 miles. Oil is loaded with soot and some fuel. Fuel has been less than 4% since I had two injectors that were leaking replaced. Before I had the injectors replaced I had an oil sample that had 25% fuel... ... . I so wish I waited for a 2013... My only hope is someone coming out with a EPA approved tuner (Smarty?) to get this thing to run better. My gut tells me advance the timing make less soot. Less soot less Re-gens. Less Re-gens better fuel economy and longer running time between oil changes.

 

[alex55]

I am following the engineers what they told I follow I know there is a sensor to show that now you have to change the oil and sensor is measuring the oil viscosity and oil quality. Sometimes I change the oil before coming the light on when I completed the miles I changed the oil. My vehicle running well.