first off happy thanksgiving to all! now my question, when i was winterizing boat i ran out of nontoxic antifreeze but all i had left was the head so i pumped automotive antifreeze theough it, i jumped in the boat today to check on things and noticed antifreeze on the floor coming from the head, i left small amount of antifreeze on the bottom, about 1/2 inch deep and its still there but i know this puddle came from the head, did i damage it by using the antifreeze?? if it matters its the rariten ph2 with electric motor option on the pump .all the motor does is connect to the pump arm, thanks