Hi, replaced my pcv a couple of weeks ago, now i want to put some Subaru cleaner through it. Does anyone have a pic of which hose to put it in? Or do you just shove it down the carb (don't want to do that myself)?

 

Is it recommended you change the oil after cleaning, if so, how long? Thank you.

Just about any fuel additive will clean the top end for your, and clean the fuel system on the way by. Just dump it in with the next fill-up.

Put some seafoam in a small cup or can(not styrofoam) and suck it through the brake booster line coming from the brake booster.Works good and tons of fun white smoke!