Product Tested

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Smitty's Supply, Inc.

Company and Product Information

Corporate Office:
Smitty's Supply, Inc.
Roseland, LA 70456

Website(s): www.smittysinc.net

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.

SuperS Multi-Purpose
D/M Automatic Transmission Fluid

Product: SuperS
Labeled: Multi-Purpose D/M Automatic Transmission Fluid

Manufactured By: Smitty's Supply, Inc., Roseland, LA

Purchased at: Bethany, LA

Date of purchase: 8/6/2018


Website(s): www.smittysinc.net

Test Results and Assessment:

Advisory: Whereas the SuperS Multi-Purpose D/M ATF label states that the product "is suitable for use in all vehicles that recommend DEXRON® -III(H), DEXRON® -III, DEXRON® -IIE, Type A Suffix A or MERCON® performance levels," the results of the tests conducted for this sample do not meet the DEXRON®-III and MERCON® requirements for Brookfield viscosity at -40ºC, or the Brookfield viscosity requirements for most automatic transmissions currently on the road. A high Brookfield viscosity can compromise transmission performance at low ambient temperatures. Click for Viscosity Specifications

Further, although the label sates the product is “Multi-Purpose,” it is important for consumers to know that fluids meeting MERCON® and DEXRON®-III have not been specified for use since 1997 and 2005, respectively. The label on this product does not provide consumers with adequate information about its limited use.


bottle icon Physical Properties pass
Elemental Analysis pass
Labeling warning
Flash Point of a DEXRON III/MERCON Fluid in °C (ASTM D92)

The results of the Flash Point test conducted on this sample meet the requirements of Dexron III/Mercon.
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Viscosity @ 100°C, cSt (ASTM D445)

The results of the Kinematic Viscosity @ 100ºC test conducted on this sample meet the requirements of Dexron III/Mercon.
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Brookfield Viscosity @-40°C mPa•s (cP)

The Brookfield Viscosity at -40ºC is 58% higher than the maximum specified for Dexron III/Mercon fluids.
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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
Flash Point in ºC (ASTM D92) 170/177 Min-c 217
Viscosity @ 100ºC, cSt (ASTM D445) 6.8 Min 7.8
Viscosity @40ºC, cSt (ASTM D445)   40.1
Viscosity Index (ASTM D2270) 169
Brookfield Viscosity @-40ºC mPa s (cP) (ASTM D2983) 20,000 Max 31,571
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium, ppm 63
Magnesium, ppm 1
Phosphorus, ppm   70
Zinc, ppm 10
Molybdenum,  ppm <1
Barium, ppm <1
Boron, ppm 12
Silicon, ppm 2
Potassium, ppm 2
Manganese, ppm <1
Titanium, ppm <1
Copper, ppm <1
Sodium, ppm <1
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. DEXRON® III, 170°C minimum, MERCON®, 177°C minimum.