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.
- 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