I HAVE A1999 MERCURY COUGAR. IT HAS ABOUT 50,000 MILES ON IT. I NOTICE A LIGHT YESTERDAY THAT SAID "LOW COOLANT" THERE WAS NO ANTIFREEZE IN THE RESERVOIR. HOW MUCH TO CHECK OUT TO FIND A LEAK, AND WHAT KIND OF MONEY AM I TO EXPECT TO GET A LEAK FIXED?
ALSO, IT HAS STARTED TO STALL WHEN I FIRST START IT. AND THERE IS A GRINDING NOISE WHEN I ACCELERATE.

Optional Information:
1999 Mercury DON'T KNOW DON'T KNOW

Already Tried:
PUT ANTIFREEZE IN THE RESERVOIR