Folks, I need to reset the front passenger window but it's a bit slow and won't do the full cycle in time.
I'm thinking a quick squirt of lubrication would help - is there any recommended type? Silicon? PTFE? plain ole WD? I'm not sure how much rubber is involved in the door.
It's a pathetic question but I hope you don't mind me asking before I just bugger it up with the wrong stuff :)
Thanks!

I used white spray grease on all the sliding bits and quadrant on mine. If it's sticking in the rubber, talcum powder.

I haven’t delved into the doors of my P38 yet, so any advice offered might be a tad agricultural… based on my Defender.

For window mechanisms I’ve used whatever I’ve had to hand. I still have most of a tub of Castro CL grease (sticky, waterproof, lime-based I think) but these are manual windows.

For the glass/rubber channels I’ve had good results with a spray tin of Halfords glass and rubber lubricant, but I suspect it is silicone. I usually use it into the open channel (I.e. window down) and in conjunction with a paper rag to avoid overspray.

I put windows down and spray GT85 down window channels easy with thin plastic tube fitted to the spray nozzle
I've use this method on all my vehicles

Dry silicone for windows and sunrooves, less mess, clean to touch after and an annual once over is usually good

Yep, silicone is what I use.