Have been a proud owner of a 2011 Grizzly 550 since 2012. Bought new and have put right at 2000 miles on the machine as of today. Have done all my own upgrades to bike and I’m just finishing up my first clutch install. Was looking to flush my radiator and replace with engine ice. Anyone have an opinion on the product? Love the site, hate it’s taken me four years to find.