Cooling apparatus for the external connecting ducts of engine oil

A cooling apparatus for the internal connecting ducts of engine oil comprising:

• A crankcase bored with insert holes in an upper side, said crankcase bored with a detecting hole in the lower side:
• Plural elbows respectively screwed with said insert holes and said detecting hole of said crankcase:
• A curved metal tubular body provided with a adapter at one end and two adapters at the other end, said adapters of said metal tubular body respectively screwed with said elbows:
• and
• Said curved metal tubular body installed beside an engine fan in said crankcase, high-temperature machine oil inside said crankcase flowing into said curved metal tubular body, the forceful wind of said engine fan cooling said metal tubular body to lower the temperature of said machine oil therein, said machine oil in said metal tubular body then spouting into said crankcase through said insert holes in the upper side, said cooling apparatus able to lower the temperature of said machine oil and maintain excellent lubrication and viscosity of said machine oil to protect the machine parts in said crankcase.