I didn't change filter or anything just took a sample because I want to get an idea how long the FS's filters would last. I will test it again soon with another 5K on the oil and filters since I put on 4K in the 2 weeks since the test and haven't got my next sample kit yet. I was hope by starting the UOA at 15K my truck would be mostly broke in but that don't seem to be the case. What ya think?
Oil Use: 9,600 miles 25K on truck
Oil Type: Chevron Delo 400 15W/40
Make-up oil added: 1.5 qts
It is not unusual to find above average copper in newer GM engines, and the silicon may be a wear-in leftover as well. We will know more in the next sample but our expectations are, both these elements will read lower in the next sample. Iron was above average due to the longer than average oil use run. Our average Duramax oil sample has only 6,345 miles on it. You've put 9,600 on this oil and for the most past, things look just fine. The TBN was strong at 9.0, showing lots of active additive left. 1.0 is low. Check back in another 3,000 miles on this fill.
Aluminum 2
Chromium 1
Iron 17
Copper 23
Lead 3
Tin 4
Molybdenum 235
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 0
Boron 97
Silicon 17
Sodium 5
Calcium 3345
Magnesium 12
Phosphorus 1181
Zinc 1482
Barium 0
Viscosity at 210 F = 74.7
Flashpoint in F = 415
Fuel % = Insolubles % = 0.3
Oil Use: 9,600 miles 25K on truck
Oil Type: Chevron Delo 400 15W/40
Make-up oil added: 1.5 qts
It is not unusual to find above average copper in newer GM engines, and the silicon may be a wear-in leftover as well. We will know more in the next sample but our expectations are, both these elements will read lower in the next sample. Iron was above average due to the longer than average oil use run. Our average Duramax oil sample has only 6,345 miles on it. You've put 9,600 on this oil and for the most past, things look just fine. The TBN was strong at 9.0, showing lots of active additive left. 1.0 is low. Check back in another 3,000 miles on this fill.
Aluminum 2
Chromium 1
Iron 17
Copper 23
Lead 3
Tin 4
Molybdenum 235
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 0
Boron 97
Silicon 17
Sodium 5
Calcium 3345
Magnesium 12
Phosphorus 1181
Zinc 1482
Barium 0
Viscosity at 210 F = 74.7
Flashpoint in F = 415
Fuel % = Insolubles % = 0.3