How long can a used oil analysis sample sit on the shelf before you have to send it in for an analysis? How will shelf life effect the results?
I obtained an engine oil sample, divided it into two samples of equal size. I put them in identical lab supplied containers (plastic bottles). I sent one in immediately after the sampling and put the other on the shelf inside the air conditioned house. I then sent in the second sample for analysis, TWO years later. Here is the result:
Iron __________38_______41
Chromium _____1_______ Nickel _________ Aluminum ______9 ______9
lead __________ 1________1
Copper ________8_______8
Tin ____________5_______4
Silver ________ Titanium ______ Silicon ________ 6_______7
Boron ________ 9_______10
Sodium _______ 9_______10
Potassium _____ Molybdenum ____99______106
Phosphorus ____838_____923
Zinc _________ 963_____1035
Calcium ______2271_____2434
Barium _______ Magnesium ____17_______24
Antimony _____189______198
Vanadium _____ Fuel %Vol _____8.0______3.0
Vis CS 100C __ 8.3______ 8.9
SAE Grade ____20________20
Gly test ______Neg_______Neg
Abs Oxid______93_______100
Abs Nitr_______14________15
Test lab was: youroil.net
aehaas
I obtained an engine oil sample, divided it into two samples of equal size. I put them in identical lab supplied containers (plastic bottles). I sent one in immediately after the sampling and put the other on the shelf inside the air conditioned house. I then sent in the second sample for analysis, TWO years later. Here is the result:
Iron __________38_______41
Chromium _____1_______ Nickel _________ Aluminum ______9 ______9
lead __________ 1________1
Copper ________8_______8
Tin ____________5_______4
Silver ________ Titanium ______ Silicon ________ 6_______7
Boron ________ 9_______10
Sodium _______ 9_______10
Potassium _____ Molybdenum ____99______106
Phosphorus ____838_____923
Zinc _________ 963_____1035
Calcium ______2271_____2434
Barium _______ Magnesium ____17_______24
Antimony _____189______198
Vanadium _____ Fuel %Vol _____8.0______3.0
Vis CS 100C __ 8.3______ 8.9
SAE Grade ____20________20
Gly test ______Neg_______Neg
Abs Oxid______93_______100
Abs Nitr_______14________15
Test lab was: youroil.net
aehaas