BERP Bio Valve Oil #3-Heavy

BERP BioOil No. 3 Heavy is the heaviest option in BERP's petroleum-free piston and rotor valve oil lineup. With a 5.6 cSt viscosity, it is designed for valves that need a little more cushion, such as older instruments, looser valve tolerances, or horns where lighter oils disappear too quickly.

This is a useful choice for low brass players, older brass instruments, and anyone whose valves feel noisy, loose, or dry with lighter oils. It gives players a thicker option while staying within the BERP BioOil family.