Petroleum Quality Institute of America

The Petroleum Quality Institute of America (PQIA) is an independent resource for information and insights on the quality and performance of lubricants in the marketplace.  Our mission is to serve the consumer of lubricants by reporting on the quality and integrity of lubricants in themarketplace.

 

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WILCO Turbo Approved 10W-30 API Service SM

Packaged for A.T. William Oil Co. Winston-Salem, NC

By Warren Oil, Dunn, NC

 

Purchased in: WilcoHess, Harrisburg, PA

Date of purchase: 3/9/2011

 

 

 

The results of the tests conducted on this sample meet the requirements of an API SM, SAE 10W-30 Engine oil.

 

 

Note: Although the label on the back of the bottle displays a rectangle around the words "API Service SM," it does not bare the API Service Symbol "Donut." The API Donut is a Certification Mark that identifies engine oils that meet API performance requirements. 

 

Warren Oil contacted PQIA to advise changes were recently made to the label for this brand, and the sample tested by PQIA represents store inventory prior to the change. The new labels display the API Donut.  Click here for new labels.

 

 

PETROLEUM QUALITY INSTITUTE OF AMERICA

TEST PROGRAM

 

 

The ranges and averages shown in the table below are for
current specifications (API SN GF-5)
 
Wilco Turbo Approved
PHYSICAL TESTS Standard/ranges-b Average-e
 TBN, mg KOH/g, (ASTM D2896) 6.1 to 8.3 7.2 7.6
 Viscosity @ 100ºC, cSt, (ASTM D445) 9.3 to 12.5 10.5 10.8
 Viscosity @ 40ºC, cSt, ASTM D445     71.1
 Viscosity Index (ASTM D2270)     140
 Viscosity @ -25ºC mPa s (cP) (ASTM D5293) 7,000 Max 5,775 6,188
 Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800) 15 Max 14.2 8.6
ELEMENTAL ANALYSIS-c      
Additives
    Nitrogen μg/g (ASTM D-5762) 599 to 990 804.2 896.4
    Calcium  1,570 to 2,460 2,051 2,068
    Magnesium, ppm  6 to 46 12.3 9
    Phosphorus,  ppm 600 to 800 703 687
    Zinc, ppm  766 to 868 791 804
    Molybdenum,  ppm  <1 to 269 60 79
    Barium, ppm  <1 <1 <1
 
    Boron,  ppm  <1 to 237 79 235
    Silicon,  ppm-d  3 to 9 5 6
    Potassium, ppm 9 to 17 11 8
    Manganese, ppm  <1 <1 <1
    Titanium, ppm  <1 to 114 11 <1
    Sulfur, ppm  5,000 max 2,785 2,492
    Copper, ppm  <1  <1 <1
    Sodium, ppm  5 to 454 172 <5
    Vanadium, ppm  <1 <1 <1
Contaminants
    Silver, ppm  <1 <1 <1
    Aluminum, ppm  <1 to 3 1 3
    Chromium, ppm  <1 <1 <1
    Iron, ppm  <1 to 1 1 <1
    Nickel, ppm  <1 <1 <1
    Lead, ppm  <1 <1 <1
    Antimony, ppm  <1 <1 <1
    Tin, ppm  <1 <1 <1

a- Click here for product label.

b- Standards, shown in yellow are established by API, SAE and others. Ranges, shown in teal, represent the high and low data for the 13 major brands of API SN ILSAC GF-5 tested in September 2011.

c-Test Method for metal analysis is ASTM ASTM D5185.

d- Although silicon is used as an antifoam additive in lubricants, concentrations above 7ppm have been linked to contamination from abrasive material,

e- Average of the 13 major brands of API SN ILSAC GF-5 tested in September 2011.

 

 
WILCO Turbo Approved 10W-30 API Service SM
The American Petroleum Institute sets forth a number of laboratory and engine tests required to meet an API SN ILSAC GF-5  performance specification. Although laboratory tests alone cannot be used to establish if an engine oil meets API SN, they can be used to determine if it doesn't.

The following is a comparison of the test results for the sample of Wilco Turbo Approved 10W-30 tested with the API SM ILSAC GF-5 requirements.

 
Viscometrics

The viscometrics meet the required targets for a 10W-30.

Viscosity @ 100șC, cSt, (ASTM D445)
This text is replaced by the Flash movie.
 Viscosity @ -25șC mPa s (cP) (ASTM D5293)
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Click here for more on chart and Viscosity@100șC,cSt               Click here for about chart and Viscosity @ -30șC

 

   
Volatility Phosphorus
The volatility meets the requirements for an API SM designation.
This text is replaced by the Flash movie.


 The phosphorus content meets the requirements
for an API SM designation.
This text is replaced by the Flash movie.
Click here for more on chart and Volatilty Click here for more on chart and phosphorus

FRONT AND BACK LABELS FROM PRODUCT TESTED
 






NEW LABELS PROVIDED BY WARREN OIL SHOWN BELOW: