2004 Nissan Sentra 1.8 - Amsoil 0w-30 8,827 Miles

[ConfederateTyrant]

2004 Nissan Sentra 1.8L
Lab: Oil Analyzer's Inc.
Oil: Amsoil 0w-30
Oil Filter: EAO13
Sump Capacity: 2.9 quarts (I added all 3 quarts)
Oil Miles/Time: 8,827 miles/2.5 years
Total Miles: 44,889

No make up oil added, no filter changes.
Oil was changed.

Iron - 10
Chromium - 1
Lead - 30
Copper - 14
Tin - 0
Aluminum - 3
Nickel - 0
Silver - 0
Manganese - 0
Silicon - 26
Boron - 14
Sodium - 11
Potassium - 0
Magnesium - 11
Calcium - 3628
Barium - 0
Phosphorus - 676
Zinc - 840
Molybdenum - 7
Titanium - 0
Vanadium - 0
Cadmium - 0

Water - < .1% - FTIR
Fuel - < 1%
Visocity 100 C - 11.2
Oxidation - 54%
Nitration - 16%
TBN - 3.93

Previous analysis:
Amsoil 5w-30 - https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=1170481

This is the 3rd oil change with Amsoil synthetics. I did another oil change with Amsoil 5w-30 ASL prior to this one, but didn't perform an analysis.

No engine work was performed during this time.

OAI marked the Silicon but it's lower than my previous analysis. Magnesium was marked as abnormal, with a comment that it's slightly low for this lubricant. Oxidation was flagged as moderately high.

When I changed the oil, I took the sample, then refilled with Super Tech oil, added the Amsoil Engine & Transmission Flush, and then changed the oil and filter. I let this drain for a couple of hours before refilling with Amsoil 0w-30 SSO.

I might sample again in another 2.5 years.

All comments are welcome.

 

[ltslimjim]

For only being driven about 3,500 miles/year over a 2.5 year span, one can expect elevated wear in a 'single' typical UOA. I think the results are solid and definitely a plus for a low-mileage engine.

 

[Donald]

The oxidation and nitration are not measured in % by Polaris/OAI. The oxidation in abs/cm and the nitration in abs/0.1mm.

Silicon at 26 is a little high for 8K miles. Give the air intake a once over, in addition to PCV hoses, vacuum lines.

The TBN is super.

 

[ConfederateTyrant]

Originally Posted By: Donald
The oxidation and nitration are not measured in % by Polaris/OAI. The oxidation in abs/cm and the nitration in abs/0.1mm.

Silicon at 26 is a little high for 8K miles. Give the air intake a once over, in addition to PCV hoses, vacuum lines.

The TBN is super.

I stand corrected on the oxidation and nitration measurement. I copied over from something else and a % was there so I left it.

The Silicon level is lower than my last analysis at half the mileage, but I will give everything a once over just to make sure.