The last time Autoglass fitted my windscreen they smothered the rubber in Arbomast stating confidently that that would do the trick. After two weeks the screen leaked. When I finally got round to pulling the screen out, the Arbomast was so dry it was almost like old putty except it broke up much easier and had done so all round the screen. Having seen that I would never use it.
I do agree on the RTV as you wouldn't get the screen back out.
Toyota used a grey sealant on mine, a bit like duct sealant but the butyl stuff I used on the screen is closest and designed for the job.
The rear screen is far easier and a far better fit than the windscreen, and the gutter sealant I used has done the trick but it will need some warming up to remove again as it has gone fairly hard but is still plyable when it warms up.
I do agree on the RTV as you wouldn't get the screen back out.
Toyota used a grey sealant on mine, a bit like duct sealant but the butyl stuff I used on the screen is closest and designed for the job.
The rear screen is far easier and a far better fit than the windscreen, and the gutter sealant I used has done the trick but it will need some warming up to remove again as it has gone fairly hard but is still plyable when it warms up.