'02 Dakota / M1 HM 5w30 / 10k Miles

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Oct 16, 2012
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Location
Marysville, WA
'02 Dodge Dakota
4.7 V8
150k Miles
M1 HM 5w30
M1 Filter
10k Mile Change Interval
NAPA Sample Kit

Any thoughts are appreciated!
Feel free to compare the M1-HM to Amsoil SS as well!

Code:
DATE SAMPLED 16-Sep-17 10-Dec-16

DATE RECEIVED 21-Sep-17 19-Dec-16

DATE REPORTED 25-Sep-17 20-Dec-16

TIME ON UNIT 150000 130000

TIME ON OIL 10000 10000

OIL BRAND Mobil Amsoil

OIL TYPE Mobil1 Signature

HiMileage Series

OIL GRADE 5w30 5w30



Metals (ppm)

Iron (Fe) 18 24

Chromium (Cr) 1 1

Lead (Pb)
Copper (Cu) 11 7

Tin (Sn)
Aluminium (Al) 5 9

Nickel (Ni) 2 4

Silver (Ag)
Titanium (Ti)
Vanadium (V)
Contaminants (ppm)

Silicon (Si) 10 18

Sodium (Na) 70 147

Potassium (K) 2 2

Additives (ppm)

Magnesium (Mg) 683 22

Calcium (Ca) 1442 4365

Barium (Ba)
Phosphorus (P) 973 908

Zinc (Zn) 1101 941

Molybdenum (Mo) 94 186

Boron (B) 40 73

Contaminants

Water (%)
Coolant No No

Physical Tests

Viscosity (cSt 100C) 11.5 11.4

Physical / Chemical

Base Number (mgKOH/g) 3.5 3.3
 
Is that the older SL rated M1 5W30 HM ? It has a lot of zinc present (1100 ppm). I very much liked the old formula, but the new M1 HM now has regular ILSAC levels of zinc (~ 800 ppm) and is SN rated.

The old stuff certainly did it's job. Low iron wear numbers (18 ppm) and a good TBN of 3.5 at the end of 10,000 miles. The viscosity is also holding up well at KV100 = 11.5 cSt.
 
Last edited:
Thanks for the replies.

I feel pretty confident about this OCI interval now. That Amsoil report was the first time I had gone 10k miles on this truck and I was nervous. Now that I have some backup, I don't see any reason to go less than 10k miles.

I'm not sure of the rating on this oil, I didn't get it too long ago, but I didn't pay attention (didn't realize it had changed). I am happy with it though, I had been getting a slight seep starting around the front main seal and switching to the M1HM seemed to have slowed/stopped it, so I did buy more. The new stuff is SN/SM rated. Hopefully will do just as well.

Possibly of note, I got these M1 filters as part of a rebate promotion and that is why I am using them. Normally, and next time, I will be going back to my Napa Gold (Wix) filters.

Adam
 
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