M1 0 30 SM Question

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Didn’t get the best UOA back on my 07 Ranger. Elevated iron numbers. I’m using the M1 0-30. I’ve read that it’s common to see higher iron numbers with this oil. It’s still got the SM rated oil in it will it make a difference when I go back with the SN.
 

Astro14

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Originally Posted By: miata10ae
Didn’t get the best UOA back on my 07 Ranger. Elevated iron numbers. I’m using the M1 0-30. I’ve read that it’s common to see higher iron numbers with this oil. It’s still got the SM rated oil in it will it make a difference when I go back with the SN.
Define the term "elevated"...how long was it run? How many miles on the Ranger? What were the numbers?
 
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Originally Posted By: miata10ae
Didn’t get the best UOA back on my 07 Ranger. Elevated iron numbers. I’m using the M1 0-30. I’ve read that it’s common to see higher iron numbers with this oil. It’s still got the SM rated oil in it will it make a difference when I go back with the SN.
Slightly higher than avg Fe was a M1 SM characteristic. What it meant I don't know. Some oils do some things better than others. It was never a problem. To your question, I'm hoping the SN oils are better. I think they are.
 
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