Acid-neutralizing lubricating oil compositions

Claim 1

THE PROCESS OF FROMING STABLE, FILTERABLE LUBRICATING OIL COMPOSITIONS HAVING BASE RATIOS IN EXCESS OF 4, COMPRISING FORMING AN ADMIXTURE CONSISTING OF A DIHYDRIC ALCOHOL HAVING LESS THAN 5 CARBON ATOMS, AN INORGANIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL OXIDES AND HYDROXIDES, A FILTER AGENT, A LUBRICATING OIL, AND FROM 0.3% TO 2%, BY WEIGHT, OF AN ALKALINE EARTH METAL SULFONATE, HEATING SAID ADMIXTURE TO A TEMPERATURE IN THE RANGE OF ABOUT 250*F. TO ABOUT 350*F. FOR A TIME SUFFICIENT TO REMOVE FREE DIHYDRIC ALCOHOL, FOLLOWED BY FILTRATION, AND INCORPORATING IN THE RESULTING FILTRATE A DIHYDRIC ALCOHOL HAVING LESS THAN 5 CARBON ATOMS, AN INORGANIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL OXIDES AND HYDROXIDES, A LUBRICATING OIL, FROM 0.3% TO 2%, BY WEIGHT, OF AN ALKALINE EARTH METAL SULFONATE, AND A FILTER AGENT, HEATING THE WHOLE MIXTURE TO A TEMPERATURE IN THE RANGE OF ABOUT 250*F. TO ABOUT 350*F. FOR A PERIOD OF TIME SUFFICIENT TO REMOVE FREE DIHYDRIC ALCOHOL, FOLLOWED BY FILTRATION, WHEREIN SAID FILTER AGENT IS A COMBINATION OF GLYCOLIC ACID AND FORMIC ACID SUCH THAT THE GLYCOLIC ACID IS PRESENT IN AMOUNTS OF ABOUT 35 MOL PERCENT TO ABOUT 80 MOL PERCENT IN THE GLYCOLIC ACID-FORMIC ACID COMBINATION, SAID FILTER AGENT BEING PRESENT IN ABOUTNS SUCH THAT THE MOL RATIO OF SAID FILTER AGENT TO SAID INORGANIC SUBSTANCE HAS A VALUE FROM ABOUT 0.2 TO ABOUT 0.5, AND WHEREIN THE WEIGHT RATIO OF DIHYDRIC ALCOHOL TO SAID INORGANIC SUBSTANCE IS FROM 30:1 TO 10:1.