Most common oil leak repair under for 10 dollars and 20 minutes of your time.

Beck/Arnley BEC039-6558 Engine Semi-Circular Plug

Limited-time deal: Permatex 82180 Ultra Black Maximum Oil Resistance RTV Silicone Gasket Maker, Sensor Safe And Non-Corrosive, For High Flex And Oil Resistant Applications 3 oz

FEL-PRO 70978 EGR/Exhaust Air Supply Gasket