Product Tested

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Smitty's Supply, Inc.

Company and Product Information

Corporate Office:
Roseland, LA


Smitty's Supply, Inc. manufactures and distributes lubricants and related products. The Company offers antifreeze, brake fluids, chemicals, gear oils, greases, heavy duty engine oils, power steering fluids, and synthetic oils.


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.

SuperS Custom Plus SAE 5W-20
Synthetic Blend Motor Oil

Product: SuperS Custom Plus Synthetic Blend
Viscosity Grade: SAE 5W-20
Labeling: "For use where an SJ motor oil is reccomended."

Marketed by: Smitty's Supply, Inc. in Roseland, LA

Purchased at: Washington, D.C.

Date of purchase: 7/1/2015


Website(s): www.smittysinc.net

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: This product is labeled, "For use where an SJ motor oil is reccomended." API SJ motor oils are intended for use in vehicles built prior to 2002. Due to the high phosphorus content, use of this motor oil in engines built after 2001 may have adverse effects on catalytic converters. The label on the product tested does not adequately warn consumers of this limited use.

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 SuperS Custom Plus
TBN, mg KOH/g (ASTM D2896) 7.5
Viscosity @ 100ºC, cSt (ASTM D445) 6.9 to <9.3 7.9
Viscosity @40ºC, cSt (ASTM D445) 44.3
Viscosity Index (ASTM D2270) 151
Viscosity @-30ºC mPa s (cP) (ASTM D5293) 6,600 Max 5133
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 3619
Magnesium 16
Phosphorus, ppm 1,049 Max. 1027
Zinc, ppm 1205
Molybdenum,  ppm 0
Barium, ppm 0
Boron, ppm 2
Silicon, ppm 8
Potassium, ppm 1
Manganese, ppm 0
Titanium, ppm 0
Copper, ppm 0
Sodium, ppm 0
Vanadium, ppm 0
Silver, ppm 0
Aluminum, ppm 0
Chromium, ppm 0
Iron, ppm 1
Nickel, ppm 0
Lead, ppm 0
Antimony, ppm 0
Tin, ppm 0
  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.