2003 gt oil leak

Best to clean the area so that it's easier to see where the oil is coming from. But if asking for an educated guess you have a failed oil filter adapter gasket.

It will be necessary to drain the cooling system before hand. Will also need to change the oil afterwards. Remove the oil filter for better access. It's not a hard repair.

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This could also be a failed oil pressure sender. If so the oil will be coming from the oil pressure sender electrical connector.