front seat runs - do they need grease?

I'm cleaning the front and the seat runners are gummed up. Once clean should I grease them?

 

Yes

 

It depends whether you want to move them back and forward.

 

Just put a smear of grease on. Don't forget your nylon runnery-thing!

 

Does the nylon runnery-thing need to be greased but stay stationary?

What is the point in it?

 

I've no idea - a mystery to us all. VW fitted it, so it must have a purpose, but I'm beggared if I can think what it is. Possibly to stop the runners rattling?

 

I would say don't use normal grease or it will just attract muck and grit and cause problems. I'm sure there's a special grease you can get which would be more suited. Maybe called white grease? Can't remember

 

i'd use silicone based spray or grease myself, personally once i cleaned mine up i sprayed mine with wd40 and they've been fine since.