Product Tested

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Ozark Automotive Distributors

Company and Product Information

Corporate Office:
Ozark Automotive Distributors 
233 S Patterson Ave
Springfield, MO 65802

Website(s): www.oreillyauto.com


Automatic Transmission Fluid


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.

O'Reilly Premium Automatic Transmision Fluid

Product: O'Reilly Premium ATF
Labeled: "For use where DEXRON®-III or MERCON® fluid is specified."

Distributed By: Ozark Automotive Distributors, Springfield, MO

Purchased at: Dundee, MI

Date of purchase: 11/15/2016


Website(s): www.oreillyauto.com

Test Results and Assessment:

The results of the tests conducted on this sample meet the requirements for DEXRON® III/MERCON®.


bottle icon Physical Properties pass
Elemental Analysis pass
Labeling pass

Note: Although the laboratory tests conducted cannot alone be used to establish if an Automatic Transmission Fluid meets all of its labeled specifications, they can be used to determine if it doesn't.

PHYSICAL TESTS (click for test details) - a Standard O'Reilly
Flash Point in ºC (ASTM D92) 170/177 Min-c 201
Viscosity @ 100ºC, cSt (ASTM D445) 6.8 Min 7.2
Viscosity @40ºC, cSt (ASTM D445) 35.2
Viscosity Index (ASTM D2270) 174
Brookfield Viscosity @-40ºC mPa s (cP) 20,000 Max 15,160
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 167
Magnesium 0
Phosphorus, ppm 219
Zinc, ppm 1
Molybdenum,  ppm 0
Barium, ppm 0
Boron, ppm 59
Silicon, ppm 3
Potassium, ppm 1
Manganese, ppm 0
Titanium, ppm 0
Copper, ppm 0
Sodium, ppm 1
Vanadium, ppm 0
Silver, ppm 0
Aluminum, ppm 0
Chromium, ppm 0
Iron, ppm 0
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. Dexron® III, 170°C minimum, Mercon®, 177 °C minimum.