Hey,i just changed the coolant today in my 1999 cobra ( well i attempted to), ive never done this before and i just followed the instructions on the prestone super flush bottle. i filled it back up and i didnt get any where near the capacity of 14.1 quarts. i started jus now to read a couple of the articles about changing the coolant and it says to do a totally differnt thing, like to burp the system which i didnt do, i think i screwed up. i know this question sounds stupid but does any one have any advice and is it safe to drive like this?