Product Tested

front label

Click above for larger image

back label

Click above for larger image

Great Lakes Lubricants

Company and Product Information

Corporate Office:
Great Lakes Lubricants
Franklin Park, IL 60131



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.

Synthetic Blend Motor Oil

Viscosity Grade: SAE 5W-30
Labeling: "is suitable for use... where API SN/ILSAC GF-5 service is specified"

Distributed by: Great Lakes Lubricants, Franklin Park, IL

Purchased at: Union, NJ

Date of purchase: 1/31/2016


Website(s): petromericamotoroil.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 is "suitable for use...where SN/GF-5 service is specified", but does not claim to meet or satisfy these specifications and 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 PETROMERICA
TBN, mg KOH/g (ASTM D2896) 6.0
Viscosity @ 100ºC, cSt (ASTM D445) 9.3 to <12.5 11.0
Viscosity @40ºC, cSt (ASTM D445) 67.3
Viscosity Index (ASTM D2270) 156
Viscosity @-30ºC mPa s (cP) (ASTM D5293) 6,600 Max 5,973
Volatility, mass % loss, 1 hr, @ 250ÂșC (ASTM D5800) 15 Max -c 12.1
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 1,895
Magnesium 5
Phosphorus, ppm 600 to 800 782
Zinc, ppm 865
Molybdenum,  ppm 15
Barium, ppm <1
Boron, ppm 72
Silicon, ppm 3
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.