Quote:
Originally Posted by burro_blasta
What have seen as far as the usefulness of this in n55s? I know n54s need walnut blasting and/or catch cans but whatever I found makes it look doubtful that this is such an issue with n55s
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When I took the factory breather off to try and install the can, I stuck my pinky finger in the tube to check how much oily residue was in there. After ~56K miles there was a very, very light film on the metal part of the hose that attaches to the downpipe. The film was a light tan color and very thin. I easily wiped it off. I was a bit surprised (and pleased) that there was so little residue in the tube; especially considering part of it is corrugated plastic.