A fluid catchment assembly for capturing fluids leaking from an internal combustion engine includes an oil pan structured to fit over a factory installed oil pan of an internal combustion engine thereby facilitating the oil pan to capture fluids that leak from the internal combustion engine. A sight glass is fluidly integrated into the oil pan thereby facilitating the sight glass to visually display a fluid level in the oil pan. A plug is insertable into the drain for closing the drain and a pair of attachments is each attached between the internal combustion engine and the oil pan. Each of the attachments releasably retains the oil pan on the internal combustion engine.