Guys, nalilito na ako. Pag sinabi bang tune up, ibig sabihin ay oil change, oil filter change at spark plug change?

Or all of the above, plus valve adjstment, timing adjustment, carb re-jetting, ecu reset?

Di ko na kce ma differentiate kung ang ibig sabihin nila sa tune-up ay regular maintenance or something beyond that na kakalikutin sa makina para mag-iba/ma-fine tune ang andar ng kotse mo... tnx in advance.