Oil to use in 2002 Pathfinder LE

[monarch]

Sorry for the confusion. By OEM fluids I am refering to just the antifreeze and brake fluid. In regard to lubricants I mean any lubricant that meets the API standards listed in the owners manual for the particular component; e.g a GL-5 gear lubricant for the rear axle, Dexron III for the auto tranny, etc.

 

[bigorange30]

I have been using Mobil1 10W30. I don't think the 10 is critical. The 30 is. 5 of 0 just means that the oil will work over a wider range of temperature conditions from what I have been told. I put my first Mobil1 in at 3K.

Here is my latest oil analysis. I will list my 1st analysis first for comparison. The expected Results on my vehicle in my area are in parenthesis


Oil: Mobil1 10W30
Vehicle: 2002 QX4
Miles on oil: 6841, 8662
Miles on vehicle: 10205, 25679


Aluminum (8): 8, 7
Chromium (4): 3, 4
Iron (26): 23, 28
Copper (19): 30, 8
Lead (14): 9, 19
Tin (3): 5, 0
Molybdenum (8): 3, 13
Nickel (1): 1, 1
Manganese (3): 4, 1
Silver (0): 0, 0
Titanium (0): 0, 0
Potassium (2): 0, 3
Boron (44): 42, 45
Silicon (18): 21, 15
Sodium (8): 8, 7
Calcium (1057): 879, 1234
Magnesium (1203): 1203, 1202
Phosphorous(626): 620, 631
Zinc (740): 760, 719
Barium (1): 1, 0


TBN (>1.0): 8.0, 1.9


SUS Viscosity @ 210 F (59-68): 62.2, 68.8


Blackstone labs did the analysis. They were not overly concerned about anything. They did comment that they would like to see a lower lead content. I am setting my limit based on this at 8500. Their minimum on the TBN is 1.0 a little lower than what I thought should be a minimum but they know more about that than I do and could be because their test has changed. The viscosity also is just out of range. I am uncomfortable

going further without more testing at 8500 that looks better. I may revisit in a future oil change.