Power Windows

[robertw]

Hello,
My windows on my 1965 Cadillac DeVille convertible are going up and down slowly.
What is the best lubricant to use on them, and hopefully it is not the motors.

[The Tassie Devil(le)]

Firstly, you don't want to use any material that will soak up dirt, dust and grime, as this will make them even tighter.

A good cleaning to get rid of any contaminant where the glass rubs against would be the first place to start.

Plus, checking the internal door mechanisms to see if the lubricant needs replacing.   The lower gunners have a grease like stuff to assist in movement, but after years of gathering dirt, and grime, the slipperiness of the parts will stop.

Do the windows move any faster when you grab the glass to manually assist it up and down?

If it is the doors, have you got the rear quarter windows pushing too hard against the back of the door glass?   Or, does the glass go up and down faster with the doors open?

There are a few things to look at.

Lastly, I have used a product called Slipicone as a last resort.   This is a food-grade silicone that is used in the industry for anti-friction in machinery.   But, it has to be used sparingly, as it will show on the glass.

Nearly forgot.   Have you replaced the weatherstripping recently?   New stuff will "Grab" the glass, as most places don't remove the release agent from the surface after removing them from the moulds.

When I replaced the door top pieces in my '72 Eldo Convertible, If I had the door closed, the friction on the glass would pull the rubber ends down into the door opening.   Never happens with brand new cars, so there must be something that the aftermarket industry is doing wrong.

Bruce.

[V63]

Often The factory used a cloth 'wrap' over the rubber pieces to allow window movement over them that the replacement rubber pieces do not. I cut pieces of black cloth and glued them on with weather strip adhesive but first insure the mold release is off the new rubber.