I'm a little disappointed in this report.
My wife and I are the only owners of this vehicle. I switched over to M1 at around 15k. For the last 2 years my jeep has been driven by my wife only. She works only 10 minutes from where we live. The jeep has not seen much highway for the last two years. The 2,700 miles on this oil sample is mostly short trips and local stop-and-go traffic. I thought M1 was good for this type of driving, but I am re-thinking my oil choice for the jeep. Can someone look at my UOA and help me?
ERIC: Universal averages show typical wear from
the Jeep 4.0L after 4,500 miles on the oil. Your
oil was run less, so we were a little surprised
to see iron (steel parts) read high. It's not
high enough to think a problem is developing,
especially since all other wear looks good. The
mildly high sodium may show a trace of
anti-freeze, though it's hard to say for sure at
this level. There are other sources for sodium,
so it may not be a problem. The TBN was okay at
3.9, showing lots of active additive left. 1.0 is
low. Check back in 3,500 miles to monitor these
findings.
EQUIPMENT MAKE: Jeep
EQUIPMENT MODEL: 4.0L Inline 6 cyl
FUEL TYPE: Gasoline (Unleaded)
OIL USE INTERVAL: 2,734 Miles
OIL TYPE & GRADE: Mobil 1 10W/30
MAKE-UP OIL ADDED: 0 qts
Mi/Hr on Oil 2,734
Mi/Hr on Unit 66,229
Sample Date 09/10/2006
Unit/Universal Ave
ALUMINUM 5/3
CHROMIUM 1/1
IRON 42/25
COPPER 6/4
LEAD 1/4
TIN 1/1
MOLYBDENUM 87/51
NICKEL 1/1
MANGANESE 1/1
SILVER 0/0
TITANIUM 0/0
POTASSIUM 3/2
BORON 45/44
SILICON 10/11
SODIUM 14/9
CALCIUM 2096/2045
MAGNESIUM 11/170
PHOSPHORUS 580/727
ZINC 718/875
BARIUM 0/0
Value Should Be / Tested Value Were
SUS Visosity@210F 59-68 / 58.6
Flashpoint F >365 / 375
Fuel% Antifreeze% 0 / ?
Water% 0.0 / TR
Insolubles% 0.2
ERIC: Universal averages show typical wear from
the Jeep 4.0L after 4,500 miles on the oil. Your
oil was run less, so we were a little surprised
to see iron (steel parts) read high. It's not
high enough to think a problem is developing,
especially since all other wear looks good. The
mildly high sodium may show a trace of
anti-freeze, though it's hard to say for sure at
this level. There are other sources for sodium,
so it may not be a problem. The TBN was okay at
3.9, showing lots of active additive left. 1.0 is
low. Check back in 3,500 miles to monitor these
findings.
EQUIPMENT MAKE: Jeep
EQUIPMENT MODEL: 4.0L Inline 6 cyl
FUEL TYPE: Gasoline (Unleaded)
OIL USE INTERVAL: 2,734 Miles
OIL TYPE & GRADE: Mobil 1 10W/30
MAKE-UP OIL ADDED: 0 qts
Mi/Hr on Oil 2,734
Mi/Hr on Unit 66,229
Sample Date 09/10/2006
Unit/Universal Ave
ALUMINUM 5/3
CHROMIUM 1/1
IRON 42/25
COPPER 6/4
LEAD 1/4
TIN 1/1
MOLYBDENUM 87/51
NICKEL 1/1
MANGANESE 1/1
SILVER 0/0
TITANIUM 0/0
POTASSIUM 3/2
BORON 45/44
SILICON 10/11
SODIUM 14/9
CALCIUM 2096/2045
MAGNESIUM 11/170
PHOSPHORUS 580/727
ZINC 718/875
BARIUM 0/0
Value Should Be / Tested Value Were
SUS Visosity@210F 59-68 / 58.6
Flashpoint F >365 / 375
Fuel% Antifreeze% 0 / ?
Water% 0.0 / TR
Insolubles% 0.2