There aren't too many aircraft UOA's here and I just got the bird's regular 6 mos. oil sample back so here's one if you are interested:
Piper Dakota, Lycoming 0540 (horizontally opposed, air cooled, 540ci, 6 cyl, 235hp), approx 1,600 hrs on the engine (2,000TBO), 20 hrs on the oil and 3 quarts added. Prior sample is from last year w/ approx. 8 hrs on the oil and 1 make-up quart. There were approx 45 hours in between where we didn't get a sample (over zealous apprentice mechanic drained oil before I showed up w/ the bottle ).
6/04 4/03 Avg
Hrs. 20 8 -
Al 3 1 2
Ch 4 2 3
Fe 13 8 11
Cu 2 1 2
Pb 2145 809 1477
Tin 1 3 2
Silicon 5 6 6
Sodium 0 1 1
Calcium 1 0 1
Magnes 5 4 5
Phos 1060 1289 1175
Zinc 2 0 1
Moly, Nickel, Manganese, Silver, Titanium, Potassium & boron, all 0 actual & 0 average.
SUS @ 210F 97.6 s/b 82-105
Flash F 495 s/b >440
Fuel% b Insolubles% b
Lab Comments: "Wear read perfectly at about half average", "all metals in proper balance for engine type", "blow-by characteristics appear normal".
Regards, W&w.
Piper Dakota, Lycoming 0540 (horizontally opposed, air cooled, 540ci, 6 cyl, 235hp), approx 1,600 hrs on the engine (2,000TBO), 20 hrs on the oil and 3 quarts added. Prior sample is from last year w/ approx. 8 hrs on the oil and 1 make-up quart. There were approx 45 hours in between where we didn't get a sample (over zealous apprentice mechanic drained oil before I showed up w/ the bottle ).
6/04 4/03 Avg
Hrs. 20 8 -
Al 3 1 2
Ch 4 2 3
Fe 13 8 11
Cu 2 1 2
Pb 2145 809 1477
Tin 1 3 2
Silicon 5 6 6
Sodium 0 1 1
Calcium 1 0 1
Magnes 5 4 5
Phos 1060 1289 1175
Zinc 2 0 1
Moly, Nickel, Manganese, Silver, Titanium, Potassium & boron, all 0 actual & 0 average.
SUS @ 210F 97.6 s/b 82-105
Flash F 495 s/b >440
Fuel% b Insolubles% b
Lab Comments: "Wear read perfectly at about half average", "all metals in proper balance for engine type", "blow-by characteristics appear normal".
Regards, W&w.