Doors are moving slowly. It appears the wheels on the Anderson Sliding Glass doors. What should I use to lubricate. Any other suggestions.

The track must be cleaned and the wheel height can also be adjusted. Most sliders have a roller with a bushing rather than a bearing and can be grease with lithium white grease or graphite. Cleaning the track and adjusting the height will probably do as much as the grease to help it slide better

There is a screw on each end of door to adjust rollers.

There is a groove in bottom of door over track. This groove must be higher than track.

Spray screw with WD40 and adjust clearance.
Set door so the edge of door is just reaching jamb leg. Spacing on top and bottom of jamb leg to door should be the same.

This will set door square to jamb.

Good luck

Chuck

Andersen doors sometimes have a cap that covers the adjustment screw for the rollers (on the side of the bottom stile of the door). It looks like a flat head screw but just turn it counter clockwise to remove it and the adjustment screw is behind it. There should be notched adjustments. Turn the screw clockwise to raise the door. Adjust both screws to make the door plumb with the jamb. Lubricate the rail with a silicone spray. If this doesn't help, call your local Glass Doctor or other glass shop to have them replace the rollers on the door or if you want to tackle it yourself, rollers are available.