Product Tested

front label

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back label

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Company and Product Information

Corporate Office:
925 Tower Ave.
Superior, WI 54880

Website(s): www.amsoil.com

AMSOIL INC. manufactures synthetic lubricants and oils for engine and gear applications. It provides motor oils, hydraulic oils, compressor oils, fuel additives, transmission fluids, gear lubes, greases, filters and by-pass systems, clothing and merchandise, garage accessories, and other products. The company’s products are used in automotive and light trucks, ATV and UTV, classic and vintage vehicles, off road, semi-trailer trucks, boats and personal watercraft, diesel motors, dirt bikes, compact imports and tuners, motorcycles, motor homes, and snowmobiles. It markets and sells its products through a network of independent dealers worldwide, as well as online. The company was founded in 1972.


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.

AMSOIL Synthetic OE
SAE 0W-20 Motor Oil

Product: AMSOIL Synthetic OE
Viscosity Grade: SAE 0W-20
Labeling: API SN/ILSAC GF-5/dexos1

Manufactured By: AMSOIL INC., Superior, WI

Purchased at: Shartlesville, PA

Date of purchase: 1/25/2016


Website(s): www.amsoil.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: Whereas the back label states "Recommended for all domestic and foreign vehicles requiring any of the listed performance specifications: API SN, SM… ILSAC GF-5, GF-4… GM dexos1™...," the labels do not display the dexos1 certification mark nor is the product listed on the GM dexos1 licensed motor oil website.

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 AMSOIL
TBN, mg KOH/g (ASTM D2896) 7.84
Viscosity @ 100ºC, cSt (ASTM D445) 6.9 to <9.3 8.46
Viscosity @40ºC, cSt (ASTM D445) 44.76
Viscosity Index (ASTM D2270) 169
Viscosity @-35ºC mPa s (cP) (ASTM D5293) 6,200 Max 5,723
Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800) 15 Max -c 14.2
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 2,142
Magnesium 8
Phosphorus, ppm 600 to 800 750
Zinc, ppm 826
Molybdenum,  ppm 83
Barium, ppm <1
Boron, ppm 246
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.