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2020 LM2 3.0 Duramax

1K views 0 replies 1 participant last post by  Boat Guy 
#1 ·
While searching for my MAP Sensor (which I was never able to find) I saw this oil and was wondering if this is normal and if it isn't what do I need to do to fix it?

And of course, thank you in advance for any advice.
 

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