On Fri, 23 Nov 2018 14:49:37 -0500, wrote:

On Fri, 23 Nov 2018 09:12:04 -0800 (PST), wrote:

What are the best lubricants for VINYL sliding patio doors if the adjustments after install don't do enough to make door slide easily? Thanks.

The rollers are not rolling and you need to address that. If you don't
you will be here in a while asking us how to replace the track.

A good clue about the rollers is 'looking' at the track. Wear, tear,
bent and/or a sagging track and visual damage.