Subaru upper clylinder cleaner

Anyone know if this should be used as part of every service? or if its any use?



Im just tyring to figure out where you spray it into on the Legacy


I think it would be handy to clean out the system before i fit my oil catch can and new intercooler

need to get it into throttle body idealy, i dont think i would like chancing spraying it into intake before the maf, and i think it would get wasted going into the tmic, wait untill your fitting new tmic and spray it into t/b, she mite tick over roughly with i/c not hooked up.
I myself would be happy enough just cleaning around butterfly with the spray and a cloth

i think that it is part of dealers service only in Oz and US/CAN- plenty of bad fuel there...do you have it or just thinking of buying?
have a look here http://www.subaruforester.org/vbulletin/f88/subaru-upper-engine-cleaner-6945/