Did you use a open end wrench to try to remove the vent. At least use the 12 point boxed end. once it starts to round you sould drop a 6 point socket on it. If you can not get a socket over it, used a flared nut wrench, at least it will grab 5 points of the hex. open end wrenches are natorious for rounding tight nuts.
All that said, just pop the top off the vent cap. We always hear of ordering a toyota barbed fitting but my Toyota buddy ordered a nissan vent and popped the cap off for this vent line mod.
All that said, just pop the top off the vent cap. We always hear of ordering a toyota barbed fitting but my Toyota buddy ordered a nissan vent and popped the cap off for this vent line mod.