Will I harm my oil-less tools by putting oil in them? Support October 03, 2020 18:15 Lubricating our oil-less line of tools will not cause harm unless a corrosive/detergent is used. Always refer to your operation and maintenance manual for proper care and safe use of your tool. Related articles How often should I oil my pneumatic tools? Can I add too much? Comments 0 comments Please sign in to leave a comment.