Omega 638_Food Grade Four-in-One (Lubrication, Penetration, Water Repellency, and Oxidation Prevention) Maintenance Lubricant offers outstanding performance. Omega 638_Food Grade Four-in-One Maintenance Lubricant is widely used for maintenance lubrication: ? It features low surface tension, allowing it to displace water by penetrating details to expel moisture/water from metal components. ? Omega 638 can loosen seized bolts and nuts. ? Omega 638 is ideal for use in clean environments where non-toxic, odorless, and non-staining lubricants are required. ? Omega 638 is easy to use and can be applied with a sprayer, brush, or in a dip pan.