Product Tested

front label

Click above for larger image

back label

Click above for larger image

Midwood Brands, LLC

Company and Product Information

Corporate Office:
Midwood Brands, LLC
10611 Monroe Rd.
Matthews, NC 28105

Website(s): No Websites Found For MIDWOOD BRANDS, LLC.


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.

American XT Motor Oil
Premium SAE 10W-40

Product: American XT
Viscosity Grade: SAE 10W-40
Labeling: API SN

Packaged by: Warren Oil Company, Inc., Dunn, NC
Distributed by: MIDWOOD BRANDS, LLC, Matthews, NC

Purchased at: Washington, D.C.

Date of purchase: 7/1/2015


Website(s): No Websites Found for MIDWOOD BRANDS, LLC.

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 American XT
TBN, mg KOH/g (ASTM D2896) 6.9
Viscosity @ 100ºC, cSt (ASTM D445) 12.5 to <16.3 14.9
Viscosity @40ºC, cSt (ASTM D445) 100.5
Viscosity Index (ASTM D2270) 154
Viscosity @-25ºC mPa s (cP) (ASTM D5293) 7,000 Max 5036
Volatility, mass % loss, 1 hr, @ 250ยบC (ASTM D5800) 15 Max -c 8.3
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 1976
Magnesium 11
Phosphorus, ppm 600 Min 774
Zinc, ppm 820
Molybdenum,  ppm 42
Barium, ppm <1
Boron, ppm 188
Silicon, ppm 5
Potassium, ppm <5
Manganese, ppm <1
Titanium, ppm <1
Copper, ppm <1
Sodium, ppm <5
Vanadium, ppm <1
Silver, ppm <1
Aluminum, ppm 3
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.