Independent Authorized AMSOIL Dealer
2012 Nissan Quest Oil Analysis
This automotive case study summarizes a used-oil-analysis report for low-mileage, time-based service planning with AMSOIL Signature Series 5W-30.
What the lab data showed
The sample had 32 months and 3,000 miles on the oil, with 162,000 miles on the vehicle. The lab said the oil was suitable for continued use at sampling. The cards below list the report values in readable page copy, with the report image included below for reference.
Time in service was the point
The main lesson is time-based service planning: after 32 months and 3,000 miles, the oil was still suitable for continued use at sampling. Because oxidation was 40 abs / cm, the takeaway should stay conservative rather than turning this result into a blanket service interval.
Confirm the engine-oil recommendation
Engine-oil viscosity and capacity depend on the exact application. Use the Auto and Light Truck Guide before applying this engine-oil case study to another vehicle.
Common Quest case-study questions
Keep the result in context: useful evidence, not a universal drain interval.
Why is time emphasized more than mileage?
The oil only had 3,000 miles on it, but it had been in service for 32 months. That makes this a time-based service-planning example more than a mileage-based example.
Why not extend farther?
The lab said the oil was suitable for continued use at sampling, but oxidation was high enough to keep the next step conservative.
Should visitors copy the exact engine oil?
No. Start with the Auto and Light Truck Guide for the exact vehicle before choosing engine oil.
Optional account programs
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