So I drove it like that for 600 miles. I stop to fill up my gas, and checked my oil. It was a quart over the mark on the dipstick. I checked the owners manual, it's suppose to take 3.4 quarts. They put 4.5 quarts! Unfreakin believable! So I took it down there, they drained it out. So how do I know my engine isn't damaged! This is B.S. What to do??? Is my engine damaged, and is there anyway to tell? Thank you for your help.