NA-LUBE - King Industries, Inc.

NA-LUBE KR-Series Performance as a Base OilNA-LUBE ® KR-Series - Alkylated NaphthalenesThe performance characteristic that sets the NA-LUBE KR-Series apart from other base oils is theirsuperior thermal-oxidative stability. Thermal-oxidative stability results from both the CEC-L-48-A-95Modified Bulk Oxidation Test and ASTM D 6186 Pressure Differential Scanning Calorimetry (PDSC)are shown to illustrate this point. Thermal-Oxidative Stability - Modified CEC-L-48-A-95 Bulk Oxidation TestNA-LUBE KR-015 and a variety of other base fluids were subjected to heat and oxygen in thepresence of metal catalysts. Increases in acid number and viscosity were monitored over time. Anincrease in acid number is indicative of oxidation and degradation of the base oil. As shown in thegraph below on the left, NA-LUBE KR-015 was the most stable of the six base oils tested. Likewise,it maintained its original viscosity better than all the other fluids tested including a 7 cSt Group IIIbase oil containing an antioxidant (graph on the right).Acid # (mg KOH/g)706050403020100Increase in Acid ValueColor Key to Base Oils:0 20 40 60 80Time (hour) Thermal-Oxidative Stability - PDSC - (ASTM D 6168)PDSC - Induction Time With O 2Modified Bulk Oxidation Test ConditionsBase Oil PAO Group I Group II Group III500 grams @ 160°C for 72 hours with solubleFe and Cu catalysts and air purge at 15L/hr10009008007006005004003002001000% Increase in Viscosity0 20 40 60 80Time (hour)NA-LUBE KR-015 and KR-019 (neat) when tested at 200°C and 210°C using 500 psi O 2 resulted inthe following performance compared to other base stocks:NA-LUBEKR-015NA-LUBEKR-019Minutes @ 200°C