http://www.acehardware.com/product/i...ductId=1418922

This is a place to get dawn power dissolver which I think are located in Canada too.  They sell it in single bottles or 10 packs. I HAVE left it multiple engines soaking in it overnight with no problem. The results are great and it's biodegradable so you can flush it down the sink unlike antifreeze. <br type="_moz"/>