The shop manual says to use sealant on the windshield, but it does NOT say to use sealant on the rear window.
On the windshield, sealant is applied to the pinch weld (outer side) before installing the windshield/gasket AND AFTER the windshield is in place between pinch weld and gasket and glass and gasket.

I've found that liquid laundry detergent dries like glue. I've used it to hold intercooler boots in position on my diesel that will develop 20 psi of boost, and have not had them slip off. So it should work well on windshield installation as long as it's allowed to dry fully before applying sealant.

Last edited by klhansen; 03/05/2024 7:32 PM. Reason: added tip on liquid laundry detergent
Kevin
1951 Chevy 3100 work truck
Follow this saga in Project Journal
Photos
1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.