The only PTI I remember was butyl tape and liquid butyl. Never liked it as well as 3M Window-Weld. How many remember cutting out butyl set ws on a 90 degree day. The banana knife got kind of messy on Torino's and LTD. Then they started putting that @#%^ urethane on across the bottom! Memory Lane!!
#trainwreck
Slavelites fault!!
I am sorry but I have to chime in, GM used poly sulfide not butyl like Ford with a dam material to install windshields and back glasses before urethane. I have been in the industry over 30 years and work on allot of older cars and have never seen a stock GM windshield with butyl ...I could be wrong but I haven't seen it
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