I HAVE A 2001 CADILLAC DEVILLE WITH A 4.6(Y) MOTOR WHILE I LOVE THE CAR THE MOTOR IS THE PITS IT IS VERY COSTLY USING OVER 1QT BETWEEN OIL CHANGES AND NOW I HAVE A MISFIRE AND LOST OF COOLANT AND WAS TOLD THAT MY HEAD GASKET HAD BLOWN AND MY CRANKCASE HALVES ARE LEAKING AND I WAS TOLD TO FIX IT WOULD BE A NEW ENGINE AT THE COST OF $8K SO I GUESS I WILL HAVE TO DEAL WITH THE RANDOM MISFIRE BECAUSE I CANT AFFORD TO FIX IT YOU WOULD THINK SINCE CADILLAC IS GM'S LUXURY BRAND THEY WOULDN'T HAVE THE CUSTOMERS DEAL WITH THIS SLOPPY ENGINE ALSO I HAVE HAD THE OIL DRIP ON THE EXHAUST AND START A SMALL FIRE SO NOW I WILL HAVE TO TRY AND BABY THIS THING. *TR