Originally Posted by
LeftinFlint
My bike has Presta and I just leave the adapter screwed onto one wheel. I carry CO2, which fits on the Presta and if I need an auto pump, I can use the adapter.
I used to do that, but one day I went to air up and the adapter was leaking, useless. It had a little rubber seal inside, and being out in the weather that had disintegrated. I keep mine with the patches now.