Clear, odorless lubricant lasts longer than conventional lubricants with little residue. Stays on valve surfaces, penetrates and frees frozen rods and screws. Keeps both old and new instruments performing at their best. The small bottle of valve oil will last almost forever. Each application can last up to 6 weeks, using only one or two drops. The slide grease will not break down over time and will continue to allow the slide to move freely without the need for replacement for a long time.