I drive a 2006 ford crown victoria police interceptor. when i go to the gas station I will fill it up about $20-$25 worth. when i look at the gas reader thingy in my car the red line shows it as full. but one time i noticed after doing SOOOOO much driving that I was still full. I was quite suprised. I said to myself that I think I over filled my car's gas tank. Then eventually the red line started going down as normal. I think I was over filled. Do you think I could have been over filled? And if so, is that bad for the car?