How did it go? I researched making custom AC hoses when I was told I should replace my non barrier hoses with barrier hose and found this video with some exc tips https://www.youtube.com/watch?v=IPT3sEiR1uc

Turns out from pressure testing, my non barrier hoses are fine and I did not replace them.

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked