Cummins ISX; Rotella 15w-40 20k miles
- Thread starter Earnies2
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Originally Posted by Earnies2
Can someone help me read this sample.
Not unless you can repost it in higher resolution.
Can someone help me read this sample.
Not unless you can repost it in higher resolution.
Originally Posted by Quattro Pete
Originally Posted by Earnies2
Can someone help me read this sample.
Not unless you can repost it in higher resolution.
+1. FWIW, If an oil analysis can't be understood unless your a lube engineer, it's time to change companies. Blackstone leaves no doubts/questions. They use plain language for us. Used them for years. I highly recommend them.
Originally Posted by Earnies2
Can someone help me read this sample.
Not unless you can repost it in higher resolution.
+1. FWIW, If an oil analysis can't be understood unless your a lube engineer, it's time to change companies. Blackstone leaves no doubts/questions. They use plain language for us. Used them for years. I highly recommend them.
![[Linked Image]](https://www.bobistheoilguy.com/forums/attachments/usergals/2019/07/full-86017-34157-screenshot_20181023_221232_adobe_acrobat.jpg "[Linked Image]")
![[Linked Image]](https://www.bobistheoilguy.com/forums/attachments/usergals/2019/07/full-86017-34158-screenshot_20190705_000617_adobe_acrobat.jpg "[Linked Image]")
I would highly recommend getting TBN when you are going to long mileage OCI. Forget Blackstone and use NAPA. They include the TBN for $16.00.
THE UOA looks fine for 22K miles. How large is the oil sump? Forget the Blackstone comments.
THE UOA looks fine for 22K miles. How large is the oil sump? Forget the Blackstone comments.
Ok that's great advice I have a napa account I will look into that. The sump is 11 gallons. Does everything on this sample look ok i am kinda clueless on reading these but i want to learn how....the 2 samples are close one was 18k and the recent one was 20k i just installed a amsoil bypass. I will go to my next change and sample then and see what the bypass did..
dnewton3
Staff member
Welcome to the site!
You seem to have the cart before the horse; two UOAs and no understanding of how to read them and what they are good for (and not good for). And on top of that, now you have a BP filter.
Please start by reading many of the good articles linked from the home page, about UOAs.
OTR vehicles are a great place to utilize both UOAs and BP filter, but ONLY if you truly UNDERSTAND how to use them; knowing the pros/cons is paramount to making good OFCI decisions.
When did you install the BP filter? Are either of these UOAs pre or post installation?
You seem to have the cart before the horse; two UOAs and no understanding of how to read them and what they are good for (and not good for). And on top of that, now you have a BP filter.
Please start by reading many of the good articles linked from the home page, about UOAs.
OTR vehicles are a great place to utilize both UOAs and BP filter, but ONLY if you truly UNDERSTAND how to use them; knowing the pros/cons is paramount to making good OFCI decisions.
When did you install the BP filter? Are either of these UOAs pre or post installation?
dnewton3
Staff member
If you are getting that great wear prior to the BP filter, then it's doing very well indeed.
As I said, spend some time reading the articles about UOAs at the homepage. Great place to start. Then if you have more questions, there's a specific sub-forum just for asking UOA related Qs.
https://www.bobistheoilguy.com/foru...-analysis-general-questions-and-comments
As I said, spend some time reading the articles about UOAs at the homepage. Great place to start. Then if you have more questions, there's a specific sub-forum just for asking UOA related Qs.
https://www.bobistheoilguy.com/foru...-analysis-general-questions-and-comments
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