Hi
@X007X ,
One of the first things I bought for rubber windows squeaks "Gummi Pfledge Stift"
is wonderful and highly recommended...
It's available at Amazon.
Amazon.com: nextzett 91480615 'Gummi Pflege Stift' Rubber Care Stick - 3.4 fl. oz: Automotive
www.amazon.com
Good luck,
Shawn