A method of producing a non-petroleum based electrical insulating oil, wherein the method can include providing a primary mixture of non-petroleum origin, containing isomerized straight chain hydrocarbons; performing a distillation and/or stripping of the primary mixture; collecting a paraffinic base oil as a product of the distillation and/or stripping, containing a mixture of isoalkanes and alkanes; and mixing the base oil with an antioxidant additive.

A method of producing a non-petroleum based electrical insulating oil, wherein the method can include providing a primary mixture of non-petroleum origin, containing isomerized straight chain hydrocarbons; performing a distillation and/or stripping of the primary mixture; collecting a paraffinic base oil as a product of the distillation and/or stripping, containing a mixture of isoalkanes and alkanes; and mixing the base oil with an antioxidant additive.