my oil dip stick tube came off my block where it sits and i can esily turn the tube in its bore or just lift it out. i just found this out yesterday but im sure i have been driving it like this for some time already. the block creates pressure but it doesnt seem to be lifting the tube at all or even leaking so i was fortunate on the road. my main question is what keeps the tube in its place so i can fix it. this is a b20 vtec motor and i dont have a catch can but im sure that dont have anything to do with this problem.