Berp BioOil for Pistons and Rotor Valves - 1 Oz. #2 (Medium)
Shipping Cost : $3.00
Non-petroleum piston oil. This is our in-house brass expert's preferred brand of oil.
from a plant-based materials with novel properties, BerpBioOils nail all application requirements, deliver on performance, and carry no carbon footprint from sourcing. They are available for rotors or pistons in a variety of viscosities. This is the medium weight piston oil.
For my older trumpets (1965 Bach Strad and 1984 Yamaha 736 (Schilke Clone) the Berp works extremely well. Smooth and no sticking or build ups.