James Mackenzie died in April 1762 and was replaced by Commander Charles Roche, with "Infernal" continuing her Caribbean patrols. In company with six other ships she took part in the capture of a single French ship, "Post de Nantz", for which prize money was paid the following year. In February 1763 the Treaty of Paris brought an end to the war, and "Infernal" was returned to Deptford where she was paid off and her crew assigned to other vessels. A marine survey was conducted on 19 May 1763, and another on 31 January 1770, but there were no orders for repairs. Navy Board expenditure indicates she was almost entirely neglected during this time, with a total of £22 being spent in her upkeep between 1763 and 1774. On 26 October 1774, after eleven years at the dockyard, the increasingly decrepit vessel was sold into private hands for ₤350. Her fate thereafter is unknown.