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.

 

Supporters

 

 

 
 

GTC SAE 10W-30 MOTOR OIL API SN ILSAC GF-5

Distributed by Parkway Manufacturing & Trading Co, San Antonio, TX

 

Purchased in: H.E.B., Bellmead, TX

Date of purchase: 4-13-2012

 

The results of the tests conducted on this sample meet the requirements of an API SN, ILSAC GF-5, SAE 10W-30 Engine oil.

 

 

 

 

PETROLEUM QUALITY INSTITUTE OF AMERICA

TEST PROGRAM

 

 
The ranges and averages shown in the table below are for
current specifications (API SN GF-5)		 GTC
PHYSICAL TESTS Standard/ranges-b Average-e
 TBN, mg KOH/g, (ASTM D2896) 6.1 to 8.3 7.2 8.4 
 Viscosity @ 100ºC, cSt, (ASTM D445) 9.3 to 12.5 10.5 10.2 
 Viscosity @ 40ºC, cSt, ASTM D445 55.8 to 65.2 61.88 66.7 
 Viscosity Index (ASTM D2270) 156 to 169 160 138 
 Viscosity @ -25ºC mPa s (cP) (ASTM D5293) 7,000 Max 5,775 5,880 
 Volatility, mass % loss, 1 hr, @ 250ºC (ASTM D5800) 15 Max 14.2 13.3 
ELEMENTAL ANALYSIS-c      
Additives
    Nitrogen μg/g (ASTM D-5762) 599 to 990 804.2 741.2 
    Calcium  1,570 to 2,460 2,051 2,221 
    Magnesium, ppm  6 to 46 12.3 12 
    Phosphorus,  ppm 600 to 800 703 689 
    Zinc, ppm  766 to 868 791 840 
    Molybdenum,  ppm  <1 to 269 60 47 
    Barium, ppm  <1 <1 <1 
 
    Boron,  ppm  <1 to 237 79 50 
    Silicon,  ppm-d  3 to 9 5 4 
    Potassium, ppm 9 to 17 11 5 
    Manganese, ppm  <1 <1 <1 
    Titanium, ppm  <1 to 114 11 <1 
    Sulfur, ppm  5,000 max 2,785 2,970 
    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 1
    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.

 

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

  
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)
This text is replaced by the Flash movie.

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 SN ILSAC GF-5 designation.
This text is replaced by the Flash movie.


  The phosphorus content meets the requirements
for an API SN ILSAC GF-5 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