I had an analysis done for my '03 Jeep Grand Cherokee. I'm using Mobil 1 5W-30 and I sent the analysis in when the oil had only 3k miles on it. According to Blackstone Labs, my oil shows typical wear metals for an oil with 5,500 miles on it
. They also noted the lead from bearings was higher than it should be. That might be from my "lead" foot though
. TBN came back at 5.9.
I was planning on extending the OCI to 6k miles but now after seeing the report I'm going to change it now. I'm debating wether or not to even bother with Mobil 1 if I'm going to have to change every 3k miles anyway. I might just go back to dino.
I'm still surprised at the results. I would have thought my oil would have been mostly fine after only 3k miles, especially using Mobil 1.
PS, I have the report as a pdf. file, but am unsure how to remove my name, address, and phone number from it, so I didn't post it.


I was planning on extending the OCI to 6k miles but now after seeing the report I'm going to change it now. I'm debating wether or not to even bother with Mobil 1 if I'm going to have to change every 3k miles anyway. I might just go back to dino.
I'm still surprised at the results. I would have thought my oil would have been mostly fine after only 3k miles, especially using Mobil 1.
PS, I have the report as a pdf. file, but am unsure how to remove my name, address, and phone number from it, so I didn't post it.