Originally Posted by Knightrider966

Just make some sort of coupler you can put onto the plug fitting and blow compressed air and water into it full blast with the t-stat removed. I used a garden hose splitter available at ACE hardware made of brass put my garden hose on one side and my airhose on the other. I put a cut washing machine hose on the remaining end and band clamped that onto the pipe I replace the block drain plug with for this project. The massive water flow and air bubbles dislodged a TON of crap floating or settling in to the lower area of my engine block and shot it out every hose on the motor! If you have a drain plug on both sides, do this on both sides. You won't believe your eyes! And your engine will love it and run cooler. Mine dropped almost 10C here in Phoenix! We could top our all time high of 122*F this year!