I dont know why they state 25 psi as the max.. that
line has a MUCH higher burst pressure... hell in a
production car they use plastic lines and run 50#
line pressure... yes the fittings tend to be leak points
and if the line is held correctly then even cracking
is down to a minimum... I ran 1/2" alum line on my
car and had it on there for 10 years without a single
leak... I changed over to braided line and now I am
thinking to go back to alum