Amsoil ASL 5W30, 12K, 94K 12 Jeep Wrangler

[TXHunter]

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

OIL             Ams ASL 5w30    Ams ASL 5w30    Ams ASL 5w30    Toy 5w30
MILES IN USE    12,078        9,556        7,543        4,283       
MILES ON UNIT   94,470        82,392        72,826        65,283   
SAMPLE TAKEN    2/25/21        2/17/20        5/11/19        9/12/18       
MAKE UP OIL    0        0        0        0       

ALUMINUM    8        4        3        3       
CHROMIUM    2        1        1        1       
IRON        26        14        10        8       
COPPER        10        9        9        10       
LEAD        0        0        0        0       
TIN        1        1        0        1       
MOLYBDENUM    198        187        178        51       
NICKEL        1        0        0        0       
MANGANESE    1        0        0        0       
SILVER        0        0        0        0       
TITANIUM    0        0        0        1       
POTASSIUM    1        2        3        1       
BORON        36        30        49        13       
SILICON        33        23        16        16       
SODIUM        16        16        11        9       
CALCIUM        1137        1129        1252        1900       
MAGNESIUM    925        815        761        221       
PHOSPHORUS    676        635        650        683       
ZINC        764        725        725        793       
BARIUM        0        0        0        0       

SUS @ 210F    61.0        60.9        60.4        53.5       
Visc @ 100C    10.49        10.46        10.34        8.33       
Flashpoint    390        400        395        415       
Fuel %        <0.5        <0.5        <0.5        <0.5       
Antifreeze %    0.0        0.0        0.0        0.0       
Water %        0.0        0.0        0.0        0.0       
Insolubles %    0.3        0.2        0.3        0.2       
TBN        2.0        2.6        3.5

Blackstone comments:
Aluminum, chrome, and iron, have all bumped up in this latest report, maybe showing just a touch more cylinder-wear than usual for this engine. Nothing to be too concerned about rhough, more just something to monitor. The increases (on some level) are due to this being the longest oil run yet. We're a little more wary of silicon's source this time. It increased a little and if it's from dirt getting by the air filter it could be the reason for the slightly elevated wear-rate levels this time. Check for air filter/intake issues. The TBN is getting low at 2.0; stick to 12K miles.

 

[jurko]

Metal traces appear to be at aceptable levels with exception of Si as Blackstone pointed out. Check air intake system, oil filter plugging, filter cap and or breather and valve cover.

84% drop in TBN from virgin 12.5 is alarming and one wonder if there's sufficient alkalinity reserve left to fight acid. Without knowing TAN it's hard to judge but drop of around 60% would cause me to do OC.

 

[Greasymechtech]

I'd keep the interval <10k miles

 

[Suzuki-2000]

I've heard K&N air filters flow more air, but let in more dirt

 

[ofelas]

If you're referring to the oiled gauze K&Ns, you have heard correct.

I've heard K&N air filters flow more air, but let in more dirt

 

[madeej11]

We all know here that TBN can plummet at any time during the oci and we also know it's not linear. 2.0 is still a passing grade so who knows maybe he could ride it out to 15k even. Regardless, it still looks good after 12k so it were me I'd go for 13.5k.