Took this picture a while back when I was checking the oil for the first time. What is this hose/tube sticking through the dipstick handle? Seems like some sort of vent tube or something? I pulled it out to check the oil and it doesn't seem to want to go anywhere else - like it's formed into where it is - so I can't really tell where it should go? There is a plastic push pin that should hold it to something else - but I can't tell where?