My first post.. Got a 2013 Hybrid EX.. I let my younger cousin do an oil change on my car to justify giving him money for the weekend.. Like an idiot I didn't check it (as I taught him and he's done quite a few since) Long story short he didn't tighten my drain plug fully and now my engine is ticking like crazy when the engine runs. Looking for an engine manual so I can properly go through the motor and test everything and repair as needed before my engine ends up locking up or worse. Can't find the specific manual though for the car.. Is the standard engine optima manual good for the hybrid as well? I found a manual for the 2014 hybrid, same motor as 13 but want to be sure before I make any purchases.