I'm fairly sure that's the one I used to use years ago while it was still available here in Australia but for some reason it's been taken off the shelves here. There were two types, one for steel and one for aluminium, don't use the one for steel. The other one though was remarkably good for just cleaning up the outside of the engine. No dismantling needed, I just blocked the carb and exhaust port then gave it a quick spray and let it foam up for maybe 30 seconds before giving it a quick scrub with a toothbrush. Rinse and scrub under running water and dry.