Contact filter mfg. if their filter caused problem. They will pay for repair/replacement of motor. Be good if he has receipt where & when he purchased filter or had oil changed. But not necessary. If oil was changed at a shop, they would be held responsible for damages. And mfg should compensate shop for repair. I have sold parts that caused damages. Mfg stepped in and handled repairs and compensation to customer. Didn’t cost me, shop owner, a cent.
Contact Carquest customer service.