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Blackstone Oil Report For 6.4 ~7100mi on Castrol

3275 Views 10 Replies 5 Participants Last post by  dextersp1, 
Lil Black 4x4 Hemi
Just like it says, I changed oil about 10 days ago and got my report from Blackstone Labs Thursday. It appears that my motor still isn't broken in at ~21K miles and right under a year later.

To date I've done 4 oil changes, 2 previous with Rotella 0w40, 1 with Castrol 0w40, and currently it has Rotella again. I'm going to run the tests on the Rotella as well.

I use the larger diameter Hemi filters, either Purolator Pure One (gold) or Wix. The additional filtration might be the reason for the Blackstone Recommendation for a 9k oil interval.

I'm going to run the Rotella for about the same amount of time and see what I come up with.

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Lil Black 4x4 Hemi said:
Just like it says, I changed oil about 10 days ago and got my report from Blackstone Labs Thursday. It appears that my motor still isn't broken in at ~21K miles and right under a year later.
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How do you measure if it is broken in or not?
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Lil Black 4x4 Hemi said:
Hard to say, but my buddy has a '14 with a 5.7 and he was telling me it seemed it took his forever to break in.

As a slight aside, a good friend of the family had a number of rams over the years and told my dad it seemed to him it took a ram 75k to break-in and finally start to get mileage etc.
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I remember a post about the 6.4L getting better mileage after a certain amount of miles.

I have 8K on my truck now and drove 2,500 from Atlanta or Oregon, then picked up a 6,000lb travel trailer and I have been towing that.

I've noticed that the cold has the most detrimental effect on MPG, then wind - nothing scientific - just something I've noticed from tracking my mpg.
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