My rear tyre looses air ever so slowly - it takes about a month before I notice a difference in the handling. I should really just top the air up once a week but because the change in handling happens so slowly I don't really notice it - bit like boiling frogs in cold water (not that I've ever done that). Wondered whether it might be worth putting that air leak preventer gunk into my tyres.
Does it work well? Are there any downsides in doing it?
Mike