NOVELTY - A lubricant composition (C1) comprises first base oil component containing first base oil (5 - 100 wt.%) derived from gaseous source, where first base oil has viscosity index of greater than 115, sulfur (less than about 0.3 wt.%), and branched alkane (95 - 100 wt.%) and optionally second base oil derived from liquid petroleum source; solubilizing agent (1 - greater than or equal to30 wt.%) selected from adipate ester, polyol ester, alkylated naphthalene, alkylated sulfone, naphthenic base oil, aromatic base oil and/or alkylated benzene; and additive component.    USE - As lubricant composition in a finished lubricant; in quench fluid; in automatic transmission fluid; in a gear oil composition; in an engine e.g. stationary engines, passenger vehicle engines, truck engines, and heavy duty engines; in a power transmission e.g. automatic transmissions, manual transmissions, continuously variable transmissions; in a vehicle axle; in hydraulic system; in a rotating machines e.g. gas turbines, compressors, wind turbines, and pumps; in an industrial gear transmission; for lubricating gear device, motor vehicle, and power transmission (claimed); in wide variety of applications associated with automotive, tractor, airline and railroad industries including engines, and transmissions.    ADVANTAGE - The base oil enables reallocation of liquid hydrocarbon sources to the production of fuels such as gasoline, fuel oil, jet fuel. The conversion of gaseous sources to liquid lubricant products reduces the flaring of by-product and off-gases that cannot be used for fuel applications. The base oils exhibit an extremely high viscosity index, excellent oxidation resistance and good pour points.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a finished lubricant comprising the lubricant composition (C1);    (2) an automatic transmission fluid comprising the finished lubricant composition (C1);    (3) a grease composition comprising: base oil component including a first base oil derived from a gaseous source, where the first base oil has a viscosity index of greater than about 115, sulfur (less than about 0.3 wt.%), and branched alkane (95 - 100 wt.%), and optionally a second base oil derived from a liquid petroleum source; at least one soap (5 - 20 wt.% based on the total weight of the grease composition) selected from lithium, lithium complex, calcium, sodium, magnesium, and aluminum soaps; and the solubilizing agent, where the base oil component contains the first base oil (5 - 100 wt.%);    (4) a metal-working fluid comprising: the base oil component; at least one emulsifier selected from succinate and sulfonates (0.1 - 5 wt.% based on the total weight of the metal-working fluid); and a biocide or fungicide (0.5 - 5 wt.% based on the total weight of the metal working fluid), where the base oil component contains the first base oil (5 - 100 wt.%);    (5) lubricating a power transmission involving: introducing into a power transmission the lubricant composition comprising the base oil component; the solubilizing agent; and at least one polymer (P1) selected from olefin (co)polymer(s), and/or polyalkyl (meth)acrylate(s) (0.1 - 40 wt.% based on the total weight of the lubricant composition), where the base oil component contains the first base oil (5 - 100 wt.%); and    (6) lubricating a gear device and a motor vehicle involving: introducing into the gear device and the crankcase of motor vehicle respectively a lubricant composition comprising the base oil component; the at least one polymer (P1) (0.1 - 40 wt.%); and the solubilizing agent.