Jump to content

Oil Test From Break-In vs 15k

stlchevy61

By stlchevy61
in 6.6L Gas V8 (L8T)

 Share

Recommended Posts

stlchevy61 Enthusiast

stlchevy61

Posted
Posted

Every couple oil changes I have started sending a sample to Blackstone Labs to track engine wear over time. These are from my 24 3500HD that I got back in May. I use it haul and tow quite a bit. Both on the farm and in construction. So it sees the full spectrum of conditions. I use Mobil 1 Truck and SUV. The original test was on the break in oil. Thought I would share so everyone can see break in oil vs a normal change. The TBN was high enough that they said I am safe to run 7-8k on the next change. 

Screenshot 2025-11-04 081851.jpg

  • Like 2
Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted

Not a bad report.  I understand Blackstone raised the cost.  Oil Analyzer's offers a better report with more information. It would be interesting to see results from them.   The preferred cost is a reasonable price.

 

https://www.amsoil.com/p/oil-analyzers-test-kit-postage-pre-paid-oaippkit/?zo=521390

 

  • Thanks 1
ShotgunZ71 Senior Enthusiast

ShotgunZ71

Posted
Posted
7 hours ago, Black02Silverado said:

Not a bad report.  I understand Blackstone raised the cost.  Oil Analyzer's offers a better report with more information. It would be interesting to see results from them.   The preferred cost is a reasonable price.

 

https://www.amsoil.com/p/oil-analyzers-test-kit-postage-pre-paid-oaippkit/?zo=521390

 

😂😂😂 An oil analysis by Amsoil?

  • Confused 1
Black02Silverado Senior Enthusiast

Black02Silverado

Posted
Posted (edited)
20 hours ago, ShotgunZ71 said:

😂😂😂 An oil analysis by Amsoil?

Actually it's by an independent lab, Polaris. 

Edited by Black02Silverado
  • Like 1
  • Thanks 3

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Ryanwehr14
      2018 Sierra 1500 Transfer Case Leak

      By Ryanwehr14 · Posted

      Pretty much zero rust on the truck, the frame is super clean. Non-snowy area of California for its whole life. They didn't mention JB weld specifically, just a silicone style seal. 
    • newdude
      2012 Sierra 1500 AC issues

      By newdude · Posted

      Needs a manifold gauge hooked up and the pressures read.   If you don't have one, time to take it to a shop and have it diagnosed.  
    • newdude
      2018 Sierra 1500 Transfer Case Leak

      By newdude · Posted

      How rusty is the truck?     The transfer cases on these are an aluminum case.  If its anything like the rear diffs on the 2015-2022 Chevy Trax, those will corrode bad to the point it will push fluid through the housing via corrosion porosity or a crack from age/stress.    We have seen folks over tighten the drain and fill plugs on these transfer cases and crack them that way as well.    So I'd say its a 50/50 shot on re-sealing the case.  If all of the surfaces are good and its not badly corroded, they probably can re-seal it.  GM uses RTV to seal the case halves.   If they mention JB Weld, the issue is the case.  Be it a crack or corrosion.  JB Weld "might" hold if they clean EVERYTHING very well and drain the fluid out of the case and clean the crack and then seal it.      
    • Ryanwehr14
      2018 Sierra 1500 Transfer Case Leak

      By Ryanwehr14 · Posted

      A while back, my truck (2018 GMC Sierra 1500 5.3) went in for an o2 sensor and routine service. The tech identified that my rear output seal on my transfer case was leaking, and recommended I have them replace it. At the time I didn't think anything of it, and had them do the repair. Less than a month later, I noticed that the recently repaired seal was leaking again. I called the shop that did the repair and they warrantied the repair and replaced the same seal again. A few months later, I noticed that once again the same seal leak had come back. It wasn't a great time to bring it in and I ended up just living with it for 6 months or so, noticing small (smaller than a baseball) size oil stains below the truck when it would sit for a while, as well as oil spray on the frame (to the point where it actually took the underbody coating off in that one spot). Finally got around to brining it in again, but this time I took it to a dealership service center since I am in a different part of the state for school. They identified the same output seal leaks and recommended they replace them. They also said there was no scoring on the inside of the transfer case, so it didn't need to be replaced. They chalked up the original repair failures to non oem seals and a job that wasn't done correctly. Now they called and said the seals are holding after driving/sitting for a while, but they found a very small leak in the middle, that they recommended they seal with some kind of silicone/jb weld (not sure what they are using). I haven't picked up the truck yet, but I have been reluctant about this whole repair process because I feel like they are just fixing the same thing that keeps coming back, and I am concerned there could be another root cause for the seal failing. Has anybody else experienced anything like this, or have any ideas on other things that could be the root cause?
    • Fishbones
      2012 Sierra 1500 AC issues

      By Fishbones · Posted

      I just started having AC issues with my 2012 Sierra. The symptom is blowing warm air on all vents.  Here is what I have checked so far. Compressor clutch appears to be engaging and cycling  I checked all fuses and relay, no issues. The only thing I have notices is the short line that comes from the firewall is very cold / frosted. This line is approximately 12 inches long. The coldness stops when it hits the first line connector. As far as AC compressor - At first start the clutch engages, runs continually, Short AC line frosts up. After idling for several minutes the AC line thaws out some but is still cool and the compressor clutch starts cycling on and off every 5 seconds.  Any suggestions on what to look at next would be appreciated.  

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...