jeep wrangler 4.0 w/ valvoline maxlife

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Oct 12, 2006
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Location
Pennsylvania
EQUIPMENT MAKE: 98’ Jeep Wrangler Sahara
EQUIPMENT MODEL: 4.0L Inline 6
FUEL TYPE: Gasoline
OIL USE INTERVAL: 1,963 Miles
OIL TYPE AND GRADE: Valvoline Max-Life 10W-30
MAKE UP OIL ADDED:
COMMENTS: Thanks for the note. It sounds like you take meticulous care of your Wrangler and it shows in analysis. The universal averages column shows typical wear from this type of engine after 4,400 miles on the oil. You ran this oil about half that interval and wear read extremely low. You changed this oil but it could definitely have been run longer. If you still have it, rebottle it and sell it to the neighbors. Its that clean! No moisture, fuel, or antifreeze found. Air and oil filtration are great (see silicon and insolubles). What a nice engine. At this rate it will outlast us all.

MILES ON UNIT: 102, 886

ALUMINUM: 1
CHROMIUM: 0
IRON: 4
COPPER: 0
LEAD: 0
TIN: 0
MOLYBDENUM: 229
NICKEL: 0
MANGANESE: 0
SILVER: 0
TITANIUM: 0
POTASSIUM: 1
BORON: 10
SILICON: 7
SODUIM: 4
CALCIUM: 2340
MAGNESIUM: 7
PHOSPHORUS: 637
ZINC: 776
BARIUM: 0

I know I could have gone longer on the oil but I timed it wrong. I wanted to get an analysis done before I left for college so I had no choice but to do it when I did. This oil was run mostly during the cold months (December through March). I am very happy with how it held up. Next time I will do a 3,000 mile interval. The day I took the sample I had been driving around running errands and then I let it sit for 15-20 minutes before I drained it and took the sample. I let it drain for 3-4 seconds before I took my dose. Looks good to me, I don’t think I will change anything. Oh, and a question. I use K&N Performance Gold oil filters. They claim to filter down to 10 microns. How much does a quality oil filter affect some of these wear numbers?
 
Forgot this info...

SUS VISCOSITY @ 210F
SHOULD BE: 59-65
TEST VALUE: 58.2

FLASHPOINT IN DEG. F
SHOULD BE: >375F
TEST VALUE: 390F

FULE %
SHOULD BE: TEST VALUE:
ANTIFREEZE %
SHOULD BE: 0
TEST VALUE: 0

WATER %
SHOULD BE: TEST VALUE: 0

INSOLUBLES %
SHOULD BE: TEST VALUE: 0.3
 
Quite high incalculables, I get that after a 10K run, other than that have fun in college this fall.
 
I've seen short mileage UOA read high insolubles before. I don't know why it occurs ..or even if two instances with short mileage would constitute any correlation between short mileage and high insolubles.
dunno.gif


I don't think I've ever seen a ".0" insoluble level ..nor a 0.1 insoluble level.
 
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