Product Tested

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Wolf's Head Motor Oil Co.

Company and Product Information

Corporate Office:
Wolf's Head Motor Oil Co.
1601 McCloskey Blvd.
Tampa, FL 33605


The Wolf’s Head brand name has been in the market for close to a century with roots in Pennsylvania crude. Whereas the trademark was originally registered to Pennzoil in 1976, it is now registered to Amalie AOC. LTD in Tampa Florida.


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.

Wolf's Head SAE 5W-30 Motor Oil
Super-Duty Semi-Synthetic

Product: Wolf's Head Super-Duty Semi-Synthetic
Viscosity Grade: SAE 5W-30
Labeling: API SN/CF ILSAC GF-5

Marketed by: Wolf's Head Oil Company in Tampa, FL

Purchased at: Washington, D.C.

Date of purchase: 7/1/2015


Website(s): www.wolfshead.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.


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 Wolf's Head
TBN, mg KOH/g (ASTM D2896) 7.0
Viscosity @ 100ºC, cSt (ASTM D445) 9.3 to <12.5 10.8
Viscosity @40ºC, cSt (ASTM D445) 64.5
Viscosity Index (ASTM D2270) 158
Viscosity @-30ºC mPa s (cP) (ASTM D5293) 6,600 Max 5482
Volatility, mass % loss, 1 hr, @ 250ÂșC (ASTM D5800) 15 Max -c 13.8
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 1929
Magnesium 10
Phosphorus, ppm 600 to 800 673
Zinc, ppm 734
Molybdenum,  ppm 72
Barium, ppm <1
Boron, ppm 219
Silicon, ppm 4
Potassium, ppm <5
Manganese, ppm <1
Titanium, ppm <1
Copper, ppm <1
Sodium, ppm <5
Vanadium, ppm <1
Silver, ppm <1
Aluminum, ppm <1
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.