How do you change transmission fluid on a manual transmission on a 1998 honda civic ex coupe?
Undo the fill plug with whatever sized socket/wrench needed then undo the drain plug with a 3/8″ ratchet and drain the old fluid into a container. Retighten the drain plug and refill the transmission with Honda Manual Transmission Fluid or 10w30 motor oil. You will need a way to squirt the oil through the fill hole. Retighten the fill hole and you are set.