1. An oil-extended natural rubber formed by adding an emulsified extension oil to a natural rubber latex, coagulating a mixture
of the natural rubber latex and the emulsified extension oil, and drying only a resulting coagulum,
wherein a weight average molecular weight as converted to polystyrene of a dry rubber component is not less than 1,500,000,
wherein an aniline point of the extension oil is 85-100Â° C.