Results in on Master, Two PolyGUARD, and Formula 300

A Look at Four Samples Recently Examined

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Master Synthetic Blend Motor Oil
SAE 5W-30, API SN PLUS/ILSAC GF-5

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. Read More>

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PolyGUARD Motor Oil
SAE 5W-30, API SM

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.

Note: The label on this product states “It is formulated to meet API current service classification SM for 2010 and older automotive engines.” This product should not be used in newer engines requiring API SN or SN PLUS motor oils. Read More> 

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PolyGUARD Motor Oil
SAE 10W-40, API SM

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.

Note: The label on this product states “It is formulated to meet API current service classification SM for 2010 and older automotive engines.” Read More> 

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Formula 300 Motor Oil
SAE 5W-30, API SL/CD

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.

As noted on the back label of this product, “SL/CD Motor Oil is best suited for use in 2004 automotive engines and older.” And “CAUTION – THIS OIL IS RATED API CD. IT IS NOT SUITABLE FOR USE IN DIESEL-POWERED AUTOMOTIVE ENGINES BUILT AFTER 1994. USE IN MODERN ENGINES MAY CAUSE UNSATISFACTORY ENGINE PERFORMANCE OR EQUIPMENT HARM.” Read More>

PASSENGER CAR MOTOR OIL

PETROLEUM QUALITY INSTITUTE OF AMERICA SAMPLE SUMMARY/PASSENGER CAR MOTOR OIL Passenger car motor oil is the lifeblood of your engine. In addition to lubricating moving

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