I just did my third oil change on my 2012 Mazda 3 i GT on 5/10/13. Got the UOA results back today. The car had 11228 miles when I changed the oil and the PP 0w20 oil had 4327 miles (6 months) on it. Looks like I didn't have the fuel dilution problem this time
. I've been driving more highway miles (probably around 80% city / 20% highway now) so I think that helped. I put the new Mazda GF-5 0w20 w/ Moly oil in this time... we'll see how that goes.
Here is the UOA result:
Comments:
DEREK: Aluminum from pistons came up a bit, but not enough to show a problem. It could be some
lingering wear-in material that's working its way out of the engine, so we'll probably see some improvements
next time. Tin and silicon dropped nicely into the average range, so your engine is on its way to comparing
well with averages. We only found a trace of fuel this time and the viscosity was on target for a 0W/20-grade
oil. Insolubles were okay at 0.5%, so the oil filter got the job done. The TBN read 3.2, so try running up to
5,500 miles next and check back.
Code:
MI/HR on Oil 4,327 3,366
MI/HR on Unit 11,228 6,901
Sample Date 05/10/13 11/10/12
Make Up Oil Added 0 qts 0 qts
ALUMINUM 9 7
CHROMIUM 1 1
IRON 19 12
COPPER 5 10
LEAD 0 0
TIN 2 6
MOLYBDENUM 69 180
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 0 0
POTASSIUM 2 0
BORON 11 72
SILICON 14 20
SODIUM 3 0
CALCIUM 2236 1121
MAGNESIUM 78 678
PHOSPHORUS 690 591
ZINC 828 733
BARIUM 1 2
SUS VIS @ 210° F 48.9 45.2
cSt VIS @ 100° C 6.92 5.80
Flashpoint °F 385 335
Fuel % TR 2.5
Antifreeze % 0.0 0.0
Water % 0.0 0.0
Insolubles % 0.5 0.3
TBN 3.2 3.5
Here is the UOA result:
Comments:
DEREK: Aluminum from pistons came up a bit, but not enough to show a problem. It could be some
lingering wear-in material that's working its way out of the engine, so we'll probably see some improvements
next time. Tin and silicon dropped nicely into the average range, so your engine is on its way to comparing
well with averages. We only found a trace of fuel this time and the viscosity was on target for a 0W/20-grade
oil. Insolubles were okay at 0.5%, so the oil filter got the job done. The TBN read 3.2, so try running up to
5,500 miles next and check back.
Code:
MI/HR on Oil 4,327 3,366
MI/HR on Unit 11,228 6,901
Sample Date 05/10/13 11/10/12
Make Up Oil Added 0 qts 0 qts
ALUMINUM 9 7
CHROMIUM 1 1
IRON 19 12
COPPER 5 10
LEAD 0 0
TIN 2 6
MOLYBDENUM 69 180
NICKEL 0 0
MANGANESE 0 1
SILVER 0 0
TITANIUM 0 0
POTASSIUM 2 0
BORON 11 72
SILICON 14 20
SODIUM 3 0
CALCIUM 2236 1121
MAGNESIUM 78 678
PHOSPHORUS 690 591
ZINC 828 733
BARIUM 1 2
SUS VIS @ 210° F 48.9 45.2
cSt VIS @ 100° C 6.92 5.80
Flashpoint °F 385 335
Fuel % TR 2.5
Antifreeze % 0.0 0.0
Water % 0.0 0.0
Insolubles % 0.5 0.3
TBN 3.2 3.5
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