Product Tested

front label

Click above for larger image

back label

Click above for larger image


Company and Product Information

Corporate Office:
100 Mission Ridge
Goodlettsville, TN 37072




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.

Dollar General Auto
Motor Oil SAE 30 Non-Detergent

Product: Dollar General Auto
Viscosity Grade: SAE 30 Non-Detergent
Labeling: API SA

Marketed by: DOLGENCORP, LLC.

Purchased at: Middlesex, NJ

Date of purchase: 6/11/2015


Website(s): www.dollargeneral.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 product lists API Service SA which is an obsolete specification not intended for engines built after 1930!  According to the API, this service category of oil is unsuitable for most gasoline engines built thereafter and may cause harm to modern engines.  To their credit, the back label includes a cautionary statement about the product's 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 Dollar General
TBN, mg KOH/g (ASTM D2896) 0.43
Viscosity @ 100ºC, cSt (ASTM D445) 9.3 to <12.5 9.7
Viscosity @40ºC, cSt (ASTM D445) 70.2
Viscosity Index (ASTM D2270) 119
Viscosity @ºC mPa s (cP) (ASTM D5293) N/A N/A
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 12
Magnesium 0
Phosphorus, ppm   9
Zinc, ppm 4
Molybdenum,  ppm 0
Barium, ppm 0
Boron, ppm 1
Silicon, ppm 3
Potassium, ppm 2
Manganese, ppm 0
Titanium, ppm 0
Copper, ppm 0
Sodium, ppm 0
Vanadium, ppm 0
Silver, ppm 1
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.