I'd try the RV seal lubricant.
Actually they are called awning windows. Louvered windows would be a series of small windows stacked vertically that open from the bottom simultaneously. Like louvered shutters.
This is from Kolbe Windows products page.
"Awnings:
Awning windows open from the bottom out. The glass creates an awning above the opening, providing ventilation in a variety of weather conditions. Awnings’ unique style and operation create an unobstructed view with venting flexibility. Their versatility can also create architectural interest in small spaces, especially when combined with casements and picture windows."