is a high quality slide, rotary, and valve oil made with the finest ingredients to ensure consistent lubrication. Most petroleum based oils have a tendency to dissipate quickly due to detergent additives. Detergents adhere to oil and water molecules. Thus, when moisture is introduced to the instrument by the player's breath, the oil, which is bonded to the water through the detergent, is washed away. Bell's is manufactured without these detergents and designed to adhere to the metal in your valves, not the water in your breath; keeping the lubricant in the valve casing where it was intended to function.
For use on valves and rotors.
Manager's note: This is the fastest, longest-lasting valve oil on the market. Try it, and you won't go back to your old lube.
Additional Note: No longer blue - now in a clear formula only.