30ml 1 oz is for standard recommendation (from all the sealants I have looked at) for road tubes and 60ml/2oz for Mtn Bike tubes. So far the product that has worked best for me is caffelatex
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)