I am planning on removing my power windows and regulators on my 68 Cutlass S convertible. I want to do maintenance on the mechanisms.
I will clean, degrease, remove rust.
Then what kind and type of lubricate would you suggest??

 

Factory used a medium bodied grease. It always looked like wheel bearing grease to me.

With modern lube formulations available, I'd use something like Super Lube synthetic grease. I found it at Harbor Freight. All I've used it on are tools but it does an exceptional job there. It shut up an old USA made B&D 1/2" drill that had been growling for years and with new motor brushes it gets the job done.

 

I'll add that I only use silicone grease on any plastic or rubber parts. Petroleum-based lubricants will eventually deteriorate rubber and plastic.

 

I use white lithium grease. Spray or tube.

 

I use White Lithium Grease spray by CRC. I find that it stays in service quite long which would be excellent for window lube. Actually use it all over my 66 Cutlass convertible where applicable.

Wayne

 

Silicone grease is preferred, but I have used white lithium on occasion although it is not recommended for rubber and plastic uses...

 

Yes.

A medium-body synthetic grease will last longest because it does not oxidize (harden) the way white lithium soap greases or dino greases do.

I've used AMSOil Synthetic NGLI #1 since it first came out. If I revisit a greased part 40 years later, the synthetic grease is still soft and doing its job.

But as some said, best not use any hydrocarbon grease in contact with paint or plastic.