Hydraulic oil varies in weight, we make hydraulic AW32 which is the lightest of the three weights,  AW46 which is a heavier product and AW68 which is the heaviest.  It all depends on what you are using it for.  Gear oil is sold for automotive and industrial uses.  We have synthetic and conventional gear oils in our facility.  We have the capability of making any type of gear oil to fit your needs.  Packaging for all of these products are as follows: quarts, 5 gallon pails, 16 gallon kegs and 55 gallon drums.