Had a really scruffy 25cc Homelite torn apart and yesterday I got a spray can of Gunk Engine Degreaser,Heavy Duty Gel and sprayed it down last night and left it sit till this morning.I used a chip brush to clean some of the less reachable areas like in between the fins and clean between the flywheel fins.It came out really clean after rinsing it off.I let it air dry and then oiled the bearings.This all was just to get this engine clean,but today at a yard sale I found an old working crook pot and after I get a gallon of full strength antifreeze will try cleaning the next engine in it.I found some for $10 a gallon locally.The Gunk worked great and will be used as a backup in case the antifreeze doesn't get it all off.