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Had the upper intake manifold off this round to replace the oil pressure sensor, and just cleaned the K&N after getting this report (it was pretty dirty). Hoping those two are contributors for the jump in silicon Make/Model: Jeep Pentastar 3.6L v6 Vehicle: 2012 Jeep Wrangler Unlimited Rubicon...

Drained and filled with Amsoil MTF. With the thick gear oil 2nd hated shifting when it was cold out, way smoother with the lighter Amsoil fluid. The RP was installed before we bought it so we decided to run it and not change early, but probably worked much better in South Texas where it came...

Decided to get an initial coolant sample done on the wife's Jeep. Mileage wise from Mopar the coolant is still good, but age wise I figured it might be time to change but wanted to have an analysis done first to confirm.

Make/Model: Isuzu 6.6 Duramax LLY Vehicle: 2004 Chevy 2500HD Oil was changed at the time of this sample. I haven't posted in a while, looks like something changed as I can't get the format to look any better than this. Sorry. OIL AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40...

Second full run with Amsoil siganture. Did end up pulling 3500lbs on this oil change about 500 miles, was curious what impact it might have. I can say the Jeep wasn't a big fan, but seems like the engine didn't mind. Make/Model: Jeep Pentastar 3.6L v6 Vehicle: 2012 Jeep Wrangler Unlimited...

First full run with Amsoil Signature series oil. This oil was changed when the Jeep oil light came on at 7,500 miles. Make/Model: Jeep Pentastar 3.6L v6 Vehicle: 2012 Jeep Wrangler Unlimited Rubicon Code OIL Ams ASL 5w30 Toy 5w30 MILES IN USE 7,543 4,283 MILES ON UNIT...

Continued to follow the Blackstone recommendations and extended this one to 50K. Will be pushing towards 60K for the next OCI. This truck does a lot of pulling, but only occassionally is it at the rated limit. Overall pretty happy with the results, especially the PPM / mile trends on Iron...

Make/Model: Isuzu 6.6 Duramax LLY Vehicle: 2004 Chevy 2500HD Oil was changed at the time of this sample. Code OIL AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40 AME 15W40 MILES IN USE 22,236 19,187 13,556 19,740 12,406 20,617 MILES ON UNIT 229,762 207,526...

Drained and filled with Amsoil ASL 5w30 at time of sample. We were about to pull a trailer to the beach with this and wanted to get a baseline sample before. We bought this used from a Toyota dealership, thus the Toyota brand oil in the Jeep. Make/Model: Jeep Pentastar 3.6L v6 Vehicle: 2012...

Drained and filled with Rotella 15w40 at time of sample. Make/Model: Mahindra 2.7L Vehicle: 2016 Mahindra 2530 HST Code OIL FF HOURS IN USE 111 HOURS ON UNIT 111 SAMPLE TAKEN 9/14/18 MAKE UP OIL 0 ALUMINUM 3 CHROMIUM 0 IRON 21 COPPER 17 LEAD...

Drained and filled with Amsoil ATF. Make/Model: Jeep Rock-Trac (Rubicon) Vehicle: 2012 Jeep Wrangler Unlimited Code OIL Factory MILES IN USE 64,056 MILES ON UNIT 64,056 SAMPLE TAKEN 8/19/18 MAKE UP OIL 0 ALUMINUM 16 CHROMIUM 0 IRON 190 COPPER 74 LEAD 0 TIN 2...

Fluid was not replaced at the time of the sample. We just purchased this vehicle and had UOA's performed on the front & rear diff. Make/Model: Dana 44 Differential (Rear) Vehicle: 2012 Jeep Wrangler Rubicon Unlimited Code: OIL Unknown (Factory fill?) MILES IN USE Unknown...

Fluid was not replaced at the time of the sample. We just purchased this vehicle and had UOA's performed on the front & rear diff. Make/Model: Dana 44 Differential (Front) Vehicle: 2012 Jeep Wrangler Rubicon Unlimited Code: OIL Unknown (Factory?) MILES IN USE Unknown MILES...

Coolant is still in service, it was not replaced during sample. Make/Model: GM 5.3L V8 Vehicle: 2004 Chevrolet Tahoe Code: COOLANT Amsoil ANT Chevron Dex-Cool MILES IN USE 100,199 134,653 MILES ON UNIT 235K 135K SAMPLE TAKEN 4/22/18 3/13/12 SCA ADDED 0 13465...

Oil was changed at the time of the sample. For the blackstone questions below. Does the user this engine sees change significantly from sample to sample? No. Daily driver for the wife. Maybe more highway trips during the holiday season (Nov / Dec), but nothing else I can think of. Hopefully...

This was the first run on Amsoil ATF after switching from the GM Auto-Trak II fluid. I'm not sure how to explain the really high insolubles or copper? Fluid was replaced with another fill of Amsoil ATF at the time of this sample. Make/Model: GM Transfer Case (Rebuilt) Vehicle: 2004 Chevy Tahoe...

Will likely extend the next run to 55K based on Blackstone's recommendations. Overall looks like things are getting much better since we bought this one. Make/Model: GM Differential Vehicle: 2004 Chevrolet Tahoe Code: OIL SVG 75w90 SVG 75w90 SVG 75w90 Unknown MILES IN USE...

Oil was changed at the time of sample. Cold air intake was installed at 216K miles that replaced the entire air intake assembly, including the MAF. Good news was that I haven't had any more MAF codes trip, but bad news is that it seems to have made no difference at all in silicon levels. Also...

First OCI since installing the transfer case pump upgrade kit from Merchant. Make/Model: GM Transfer Case Vehicle: 2004 Chevy 2500HD Code: OIL Ams ATF Ams ATF Maxlife MILES IN USE 60,000 48,337 49.981 MILES 208,629 148,629 99,996 SAMPLE TAKEN 7/12/17 8/14/13 7/19/11 ALUMINUM 21 12...

Make/Model: Kawasaki 750 CC V-Twin Vehicle: 2005 Kawasaki Brute Force 750 Decided to send a sample in early as I had work done on the ATV to try and fix that fuel leak, plus after sitting for a week it's really hard to get started. Mechanic had to adjust valves (front cylinder was really tight)...