seafoam isnt a miracle worker, but it did improve the idle on my rustang, and no its not b/c its a honda, i said that b/c you said vattack, im a honda guy at heart so dont get your panties in a wad, it could be due to several reasons, seals going bad, etc etc etc, im sure the motor isnt brand new so as long as youre keeping an eye on your oil level and youre not losing a substantial amount from change to change theres nothing to worry about....now if you have actual liquid oil on your rear bumper and not just what appears to be sut then you have a real problem and need to locate the oil leak, it appears you have a less than new motor with modded exhaust and that what you have described is normal....so no worries