I got an engine oil analysis done on my 1991 CAT 3116 with 124,000k miles on it. I received a sheet of what I presume to be the result of some kind of spectrometry. As I'm not an analytical chemist, I don't really know what to look for here and don't have another oil analysis from this engine (Will repeat analysis after 2500 miles for comparison). The engine runs perfectly and hasn't shown any mechanical issues since I've had it. I'm asking the below questions more for my knowledge and the coolness factor of understanding this information than anything else.
Questions:
- How can one analyse this data to tell what maintenance is/is not recommended?
- What are some of the things to keep an eye out for on these kinds of results?
- How does one know when to change the oil?
The sheet says:
Oil Type DELO 400 LE
Oil Weight 14W30
Viscosity Limit 40C 115-147
Viscosity Limit 100C 13.8-17.6
Nitration 3.0 abs
Oxidation <2.0 abs
Total Base Number 7.5 mg KOH/g
Viscosity @ 100C 16.1 cSt
Viscosity @ 40C 132 cSt
Viscosity Index 130
Contamination
Potassium 5 ppm
Silicon 5 ppm
Sodium 3 ppm
Soot 1.6%
Water <.1%
Wear Metals
Aluminium 5 ppm
Chromium <2 ppm
Copper |||||||||||||||| [this has a large black bar through it]
Iron |||||||||||||||| [this has a large black bar through it]
Manganese 1 ppm
Molybdedum 71 ppm
Nickel 0 ppm
Lead 3 ppm
Tin <2 ppm
Titanium 0 ppm
Vanadium 1 ppm
Additives
Barium 0 ppm
Boron 215 ppm
Calcium 2642 ppm
Magnesium 801 ppm
Phosphorus 1678 ppm
Zinc 1879 ppm
