Product Tested

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Zecol Products Company

Company and Product Information

Corporate Office:
Medina, MN 55340


According to Twinco Romax website, the company is a “vertically integrated distributor and manufacturer of automotive fluids and related aftermarket products sold to a diverse base of customers in the convenience store, automotive, mass market, farm store and other retail channels. Based in Medina (Minneapolis), Minnesota.

Twinco has established a strong market position in the upper Midwest by combining a broad product line of company-owned and national brands with innovative merchandising and other value-added services that drive enhanced sales and profit margins for its customers.”


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.

Zecol-Max Semi-Synthetic SAE 5W-30

Product: Zecol-Max Maximum Protection Semi-Synthetic Motor Oil
Viscosity grade: SAE 5W-30
Labeled: API SN, ILSAC GF-5

Marketed by: Zecol Products Company

Purchased at: Bradley, IL

Date of purchase: 1/5/2015


Website(s): www.twincoromax.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.


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 Zecol-Max
TBN, mg KOH/g (ASTM D2896) 7.0
Viscosity @ 100ºC, cSt (ASTM D445) 9.3 to <12.5 10.4
Viscosity @40ºC, cSt (ASTM D445) 62.1
Viscosity Index (ASTM D2270) 157.0
Viscosity @-30ºC mPa s (cP) (ASTM D5293) 6,600 Max 5643
Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800) 15 Max -c 11.8
ELEMENTAL ANALYSIS (click for test details) - a, b
Calcium 1923
Magnesium 10
Phosphorus, ppm 600 to 800 787
Zinc, ppm 836
Molybdenum,  ppm 42
Barium, ppm <1
Boron, ppm 184
Silicon, ppm 4
Potassium, ppm <5
Manganese, ppm <1
Titanium, ppm <1
Copper, ppm <1
Sodium, ppm <5
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. This specification is expressed to two significant figures, therefore results up to 15.5 are considered on specification.