The only differences I can find on 24 vs Light is in the additives.. 24 has anti shear anti wear additives, such as zinc.... they are made from the same stock base.. 24 is designed to be used as a hydralic oil, and light is a machine oil, but again from the same stock.. so by nature of its design, the Light would foam less, and separate water better... if it were used full strength in a bearing casing

All that said, in a 5% mix to paraffin, my humble opinion is it doesn't really between the two matter if its DTE 24 oil, or DTE Light machine oil.. its the same diluted base stock that "grabs" the bearing surfaces... Only a small percentage of the oil gets to the bearings anyway, so in reality, having good clean Kero is as important as what oil it has.. It appears that people have had good success with 24, with 32, with Light.. Syn turbine motor oil is a complete diff formulation because its designed to move particles and suspend them like motor oil for filtering, and have detergent, and high shear, but it still works fine for us.. again because of the dilution and the good quality base stock.. In a turbine, its about keeping the bearings flushed clean, and not galled from heat.. and to get to the rear, the fuel/oil has to cling to the shaft in most designs to migrate rearward..

fwiw...