Product Tested

front label

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back label

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Liberty Petroleum, LLC

Company and Product Information

Corporate Office:
1100 Harris Street
Charlottesville, VA 22902



The Petroleum Quality Institute of America (PQIA) is an independent resource for information and insights on the quality of lubricants in the marketplace. Our mission is to serve the consumer of lubricants by randomly sampling and independently testing lubricants taken from the field. Test results are posted along with the brand names on the PQIA website. This webpage provides an analysis on the brand detailed below.

The following are the test results for the sample examined.

Liberty 10W-30 Synthetic Blend
Premium Motor Oil

Product: Liberty
Viscosity Grade: SAE 10W-30
Labeling: "Satisfies the requirements of API SN/ILSAC GF-5"

Marketed by: Liberty Petroleum, LLC, Charlottesville, VA

Purchased at: Blue Bell, PA

Date of purchase: 1/30/2016


Website(s): www.libertypetroleum.com

Test Results and Assessment:

The results of the tests conducted on this sample meet the SAE J300 specifications for the SAE Viscosity Grade listed on the product label, and are consistent with the listed API Service Categories.

Note:  The back label on this bottle claims the oil "satisfies the requirements of API SN/GF-5", but does not display any API certifications marks for these specifications.

bottle icon Physical Properties pass
Elemental Analysis pass
Labeling warning

Note: Although laboratory tests alone cannot be used to establish if engine oil meets an API Service Category, they can be used to determine if it doesn't.

PHYSICAL TESTS (click for test details) - a Standard Liberty
TBN, mg KOH/g (ASTM D2896) 8.0
Viscosity @ 100ºC, cSt (ASTM D445) 9.3 to <12.5 10.6
Viscosity @40ºC, cSt (ASTM D445) 67.9
Viscosity Index (ASTM D2270) 144
Viscosity @-25ºC mPa s (cP) (ASTM D5293) 7,000 Max 5,175
Volatility, mass % loss, 1 hr, @ 250ÂșC (ASTM D5800) 15 Max -c 10.2
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 2,216
Magnesium 10
Phosphorus, ppm 600 to 800 768
Zinc, ppm 843
Molybdenum,  ppm 82
Barium, ppm <1
Boron, ppm 250
Silicon, ppm 6
Potassium, ppm <5
Manganese, ppm <1
Titanium, ppm <1
Copper, ppm <1
Sodium, ppm 5
Vanadium, ppm <1
Silver, ppm <1
Aluminum, ppm 2
Chromium, ppm <1
Iron, ppm <1
Nickel, ppm <1
Lead, ppm <1
Antimony, ppm <1
Tin, ppm <1
  1. Standards, shown in yellow are established by API, SAE and others.
  2. Test Method for metal analysis is ASTM D5185.
  3. This specification is expressed to two significant figures, therefore results up to 15.5 are considered on specification.