The independent resource for information and insights on the quality and integrity of lubricants in the marketplace.

Tag: Marathon

Results in on Three 5W-20s and Three 5W-30s

  The Petroleum Quality Institute of America tested three brands of SAE 5W-20 and three brands of SAE 5W-30 motor oil. The results of the tests conducted on samples of the brands 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 ›

Five 5W-20s and They All Look Good

The results of the tests conducted on the five samples of SAE 5W-20 shown below meet the SAE J300 specifications a SAE 5W-20 viscosity grade and are consistent with the API Service Categories shown on the labels. CLICK BOTTLES FOR DETAILS