Mobil 1 EP 5w/30,10K oci,05 Colorado

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This is a 3.5L I5/auto. K&N replacement filter, 89 octane. A/C delco filter swap at 5K added 1/2qt make up oil. Previous oils were M1 5w/30. Since summer is almost here, I'm thinking filter @4K, oil @8K to bring down the iron number...

The 10,004 mile oil run produced higher wear metal readings in most categories with iron from steel parts being the leader. That is because iron "tracks" with miles of oil use more than any other metal. It reads 2x's the universal averages which are based on a 5500 mile oil run for this engine. The TNB was 2.1, some active additive left. No contaminants were found and air and oil filtration (see silicon and insolubles) were normal. If the iron doesn't bother you, resample at 10K.

MI/HR ON OIL--10,004(M1EP)-6,000(M1)--4,330(M1)
MI/HR ON UNIT---34,004------24,000----17,941
SAMPLE DATE---3/19/07---9/12/06---6/15/06

ALUMINUM-----5-------------3-----------2
CHROMIUM-----1-------------0-----------1
IRON----------26-----------14----------12
COPPER-------17-----------14----------17
LEAD----------0------------1------------1
TIN-----------0------------0------------0
MOLYBDENUM--83-----------81----------76
NICKEL--------0-------------0------------0
MANGANESE--3--------------2-----------1
SILVER-------0-------------0------------0
TITANIUM-----0-------------0------------0
POTASSIUM----3-------------0-----------0
BORON--------45------------41----------40
SILICON------7--------------6------------6
SODIUM-------9--------------8-----------13
CALCIUM------2200---------2214--------2057
MAGNESIUM----20-------------13---------11
PHOSPHORUS---621-----------607--------554
ZINC---------737-----------715--------665
BARIUM-------0---------------0-----------0

TBN----------2.1-------------2.8--------2.9
SUS VISC.----58--------------59.3------59
FLASHPOINT---385------------385-------370
FUEL-------- ANTIFREEZE---0.0-------------0.0---------0
WATER--------0.0-------------0.0---------0
INSOLUBLES---0.3-------------0.2---------TR
 
Iron isn't that bad, but it could be better. Everything else is fine. 12k miles looks to be the max. I don't see the value of M1 EP at all. It's up there with S2k. I should test the new 5w-20 EP.
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I wouldn't be so concerned with the 26 ppm Iron per se, rather, I'd be concerned that it has risen from 12 to 26 in the last two OCIs. Yeah, M1 has a rep for high Iron, but that seems excessive. If it were me (and of course it's not...), I'd call in Terry Dyson and see what he as to say. At worst, you're out ~$30 to have the peace of mind of ruling out any major problems (or maybe that's the "at best").
cheers.gif
 
The high iron is because it was run for 10,000 miles. In the other 2 runs, the iron was half what it is now, and the runs were for half as long.
 
I'm thinking the same thing about double the mileage but then again, 26 seems outside the average.I'll compromise and retest at 6K then consult with Terry and go from there.
 
I have the Colorado 3.5 and used Mobil-1 and Mobil-1 EP for the three OCIs since purchasing the vehicle new.

I am switching to Quaker State QTorque Power after this run. I never saw any consumption until I switched to EP. This oil is way over-rated.

Another oil that will get your iron & wear numbers down is Pennzoil Platinum. I think you should consider switching. Walmart will exchange your unused Mobil-1 without a receipt. That's how I got my Quaker State oil. I took what I had remaining of the Mobil-1 to Walmart for a swap.
 
I saw it looks good! To be honest it is one of the best GM UOA I have seen espcialy when you look at the 10,004 mile OCI!! You might try adding 1 quart of M1 15W50 too the crank case in place of one quart of the 5W30. You might also top up with 15W50 since it is only a 1/2 quart. I suspect that these two things alone would make a significant impact on iron and not affect anything else. Humor me and lets see what see. I suspect that even though fuel is not showing up in high enough amounts in the oil to be a direct issue that it is a cumlative thing and is affecting the proerties of the oil chemicaly. The rest of the wear numbers look great and 26 for iron is not that bad considering the OCI!
 
good advice guys, Thanks. I like doing experiments, how about this? Use the same drain-n-refill technique (mentioned below) at 5k, being very meticulous about keeping everything clean and contaminate free. no filter change or make up oil added until I get results back. From there I could either add the 15w/50 and go to 10k or drain and refill with ???. Think that would work?

Not sure if this has any relevance but on that last sample I drained ~3qts of oil in a new clean Tupperware container ($3 dollars at Wal-Mart) then filled the sample bottle and put the rest back in the motor. Reason being, I was getting a 3-stage fuel system flush and did not want to contaminate the oil sample. That afternoon I did my oil change.

Mobil clean 5000 from 2.5k to 9k. M1 from 9k to 24k. M1EP to present. So far zero consumption.

Triple_Se7en private pm sent(concerning your Colorado)
 
NewC-05 - Take the comments about M1 EP consumption with a grain of salt, as Triple, by his own admissions, was doctoring the M1 EP with a half-bottle of Valvoline Synpower oil treatment.

The VSOT is a cocktail of different additives and who knows what formed in the piston ring areas from the combination of M1 additives & VSOT additives.
 
Quote:


NewC-05 - Take the comments about M1 EP consumption with a grain of salt, as Triple, by his own admissions, was doctoring the M1 EP with a half-bottle of Valvoline Synpower oil treatment.

The VSOT is a cocktail of different additives and who knows what formed in the piston ring areas from the combination of M1 additives & VSOT additives.




Blue

VSOT was developed to be used with synthetic oils having any typical oil brand add-pack. If you have any proof that Ashland (Valvoline Inc) lies about stating on the jug that it improves your engine performance, well then lets see your proof.

To also add to what Blue stated, the VSOT half-bottle treatment may be why I saw a little consumption. I should of reverted back to a full bottle treatment that I always used before.

Here's another thing I did different this last time out. Instead of using 5 quarts 5W-30 and a quart of 15W-50 Mobil-1, I dropped down to a quart of Mobil-1 5W-40 with five quarts of 5W-30.

Irregardless, I am switching to Quaker State - mainly because Mobil-1 is a tad noisy & the techs there are not up-front with it's long-time purchasers about what groups of oils it uses in passenger vehicle oils.

I won't buy from companies that talk out of the side of their face -- won't offer their real names in emails sent -- won't discount their products with store sales promotions periodically.
 
Quote:


NewC-05 - Take the comments about M1 EP consumption with a grain of salt, as Triple, by his own admissions, was doctoring the M1 EP with a half-bottle of Valvoline Synpower oil treatment.

The VSOT is a cocktail of different additives and who knows what formed in the piston ring areas from the combination of M1 additives & VSOT additives.


The additives are no different than the additives in the oil .
 
hope it's ok to continue with this thread (instead of re-referencing it in a new one) since my concern was with high iron counts. as you can see, the counts are normal at 5k and the fuel is down to TR amounts. still using 89 octane from either Shell, Exxon or Chevron. i did change the filter and added 1/2 qt of make up oil. in the end looks like i'll stick with a 10k oci add a full qt. of 15w50 at my 5k filter change, which i forgot this time.i've only driven 575 miles, it shouldn't be a problem draining and adding it now? worst case the 1/2 qt and full qt mix should have possitive effects? whatcha think?

MI/HR ON OIL---5,351(M1EP)--10,004(M1EP)-6,000(M1)--4,330(M1)
MI/HR ON UNIT---39,351---------34,004------24,000------17,941
SAMPLE DATE---7/03/07--------3/19/07------9/12/06-----6/15/06

ALUMINUM--------3--------------5-------------3-----------2
CHROMIUM--------1--------------1-------------0-----------1
IRON-------------16-------------26------------14----------12
COPPER----------11-------------17------------14----------17
LEAD--------------0--------------0-------------1-----------1
TIN---------------0--------------0--------------0-----------0
MOLYBDENUM----84--------------83------------81----------76
NICKEL------------1--------------0-------------0------------0
MANGANESE-------2--------------3-------------2------------1
SILVER------------0--------------0-------------0------------0
TITANIUM---------0--------------0-------------0------------0
POTASSIUM-------2--------------3-------------0------------0
BORON-----------52-------------45-----------41------------40
SILICON----------6--------------7-------------6------------6
SODIUM----------7--------------9-------------8-----------13
CALCIUM--------2243----------2200----------2214---------2057
MAGNESIUM-----14-------------20-------------13-----------11
PHOSPHORUS----625-----------621------------607----------554
ZINC------------781-----------737------------715---------665
BARIUM----------0-------------0---------------0-----------0

TBN-------------N/A----------2.1-------------2.8----------2.9
SUS VISC.------59.4----------58--------------59.3---------59
FLASHPOINT----365----------385-------------385---------370
FUEL-----------TR----------- ANTIFREEZE-----0.0----------0.0-------------0.0-----------0
WATER----------0.0----------0.0-------------0.0-----------0
INSOLUBLES-----0.2----------0.3-------------0.2-----------TR
 
thought i'd share my latest results..at 5K i changed the filter and add a 1/2 qt make-up oil.this was a test sample at 7,826 miles. i was curious to see at what point the iron # would rise, looks like it's going to be in the last 2k miles of use (on a 10k oci)...unfortunanly i won't be able to verify this because i did a fresh oil change 900 miles later (august heat plus a 93(octane) pcm perfromance tune raised my engine temps a good 5+ degrees...)

MI/HR ON OIL---7,826(M1EP)---5,351(M1EP)--10,004(M1EP)-6,000(M1)--4,330(M1)
MI/HR ON UNIT---41,826--------39,351---------34,004------24,000------17,941
SAMPLE DATE---8/05/07-------7/03/07--------3/19/07------9/12/06-----6/15/06

ALUMINUM--------3--------------3-------------5-------------3-----------2
CHROMIUM--------1--------------1------------1-------------0-----------1
IRON-------------18-------------16-----------26------------14----------12
COPPER----------12-------------11-----------17------------14----------17
LEAD--------------0-------------0-------------0-------------1-----------1
TIN---------------0--------------0------------0--------------0-----------0
MOLYBDENUM----78-------------84------------83------------81----------76
NICKEL------------1-------------1--------------0-------------0-----------0
MANGANESE-------3-------------2--------------3-------------2-----------1
SILVER------------0-------------0--------------0-------------0------------0
TITANIUM---------0-------------0--------------0-------------0------------0
POTASSIUM-------3-------------2--------------3-------------0------------0
BORON-----------47------------52-------------45-----------41------------40
SILICON----------7-------------6--------------7-------------6------------6
SODIUM----------8-------------7--------------9-------------8-----------13
CALCIUM--------2247----------2243----------2200----------2214--------2057
MAGNESIUM-----14------------14-------------20-------------13-----------11
PHOSPHORUS----606-----------625-----------621------------607----------554
ZINC------------752-----------781-----------737------------715---------665
BARIUM----------0------------0-------------0---------------0-----------0

TBN-------------N/A----------N/A----------2.1-------------2.8----------2.9
SUS VISC.------58.9----------59.4----------58--------------59.3---------59
FLASHPOINT----365-----------365----------385-------------385---------370
FUEL-----------TR-------------TR----------- ANTIFREEZE-----0.0------------0.0----------0.0-------------0.0-----------0
WATER----------0.0------------0.0----------0.0-------------0.0-----------0
INSOLUBLES-----0.3------------0.2----------0.3-------------0.2-----------TR
 
Interesting numbers. FP is low, yet only TR of fuel? With the low TBN numbers I'm guessing their is more fuel in the oil than B/S found.
 
From personal experience with this model and engine doing 8K OCIs, your engine will sound/perform better switching to Quaker State Torque Horsepower.

The Mobil-1 15W-50 addition worked well for me when I ran three OCIs using Mobil-1. 2 quarts 15W-50 with 4 quarts 5W-20 is really the best performer for that engine - I found.

I'm now switching from QS to Amsoil ASL - no other reason than curiosity & finding a nice price ($6.49 qt). These engines are showing a little dilution - so an 8K OCI with a little kick-up in viscosity will lengthen engine life.
 
I feel confident with a 10k oci (or pretty close). I’ll just time the oil change somewhere around July or no later than Aug.The comment on the report said I’m good for another 2-3k easily and wears are better than most.

Tripple--i'll try your 2/4 combination next time, for now best i can do is add a qt of 15w/50 at my 5k filter change.I appreciate everyone's ideas and opinions, Thanks


Quote:


Interesting numbers. FP is low, yet only TR of fuel? With the low TBN numbers I'm guessing their is more fuel in the oil than B/S found.



What's B/S?
confused.gif
 
oh, i forgot to mention that i have never had to add between oil changes, only what was needed to refill the oil filter...
 
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